1
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Li S, Li J, Wang Y, Yang M, Huo C, Xu S, Chen X, Li Q, Miao J, Guo EJ, Jin K, Gu L, Zhang Q, Lin T, Lin K, Huang L, Xing X. Stereointerface Structure Drives Ferroelectricity in BaZrO 3 Films. Inorg Chem 2024; 63:15098-15104. [PMID: 39072372 DOI: 10.1021/acs.inorgchem.4c02145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2024]
Abstract
Interfacial strain engineering can induce structural transformation and introduce new physical properties into materials, which is an effective method to prepare new multifunctional materials. However, interfacial strain has a limited spatial impact size. For example, in 2D thin films, the critical thickness of biaxial strain is typically less than 20 nm, which is not conducive to the maintenance of a strained structure and properties in thick film materials. The construction of a 3D interface can solve this problem. The large lattice mismatch between the BaZrO3 thin film and the substrate can induce the out-of-phase boundary (OPB) structure, which can extend along the thickness direction with the stacking of atoms. The lattice distortion at the OPB structure can provide a clamping effect for each layer of atoms, thus expanding the spatial influence range of biaxial strain. As a result, the uniform in-plane strain distribution and strain-induced ferroelectricity (Pr = 13 μC/cm2) are maintained along the thickness direction in BaZrO3 films.
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Affiliation(s)
- Shan Li
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Jiaqi Li
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Yilin Wang
- College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Mingdi Yang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Chuanrui Huo
- Beijing Advanced Innovation Center for Materials Genome Engineering, Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Shuai Xu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Xin Chen
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Qiang Li
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Jun Miao
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Er-Jia Guo
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Kuijuan Jin
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Lin Gu
- School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Qinghua Zhang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Ting Lin
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Kun Lin
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Ling Huang
- College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
- State Kay Laboratory of Chemistry and Utilization of Carbon-Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830046, China
| | - Xianran Xing
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
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2
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Liu X, Tu J, Fang YW, Xi G, Li H, Wu R, Liu X, Lu D, He J, Zhang J, Tian J, Zhang L. Colossal Ferroelectric Photovoltaic Effect in Inequivalent Double-Perovskite Bi 2FeMnO 6 Thin Films. J Am Chem Soc 2024; 146:13934-13948. [PMID: 38741463 DOI: 10.1021/jacs.4c01702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Double perovskite films have been extensively studied for ferroelectric order, ferromagnetic order, and photovoltaic effects. The customized ion combinations and ordered ionic arrangements provide unique opportunities for bandgap engineering. Here, a synergistic strategy to induce chemical strain and charge compensation through inequivalent element substitution is proposed. A-site substitution of the barium ion is used to modify the chemical valence and defect density of the two B-site elements in Bi2FeMnO6 double perovskite epitaxial thin films. We dramatically increased the ferroelectric photovoltaic effect to ∼135.67 μA/cm2 from 30.62 μA/cm2, which is the highest in ferroelectric thin films with a thickness of less than 100 nm under white-light LED irradiation. More importantly, the ferroelectric polarization can effectively improve the photovoltaic efficiency of more than 5 times. High-resolution HAADF-STEM, synchrotron-based X-ray diffraction and absorption spectroscopy, and DFT calculations collectively demonstrate that inequivalent ion plays a dual role of chemical strain (+1.92 and -1.04 GPa) and charge balance, thereby introducing lattice distortion effects. The reduction of the oxygen vacancy density and the competing Jahn-Teller distortion of the oxygen octahedron are the main phenomena of the change in electron-orbital hybridization, which also leads to enhanced ferroelectric polarization values and optical absorption. The inequivalent strategy can be extended to other double perovskite systems and applied to other functional materials, such as photocatalysis for efficient defect control.
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Affiliation(s)
- Xudong Liu
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Jie Tu
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Yue-Wen Fang
- Fisika Aplikatua Saila, Gipuzkoako Ingeniaritza Eskola, University of the Basque Country (UPV/EHU), Europa Plaza 1 Donostia/San Sebastián 20018, Spain
- Centro de Física de Materiales (CSIC-UPV/EHU), Manuel de Lardizabal Pasealekua 5 Donostia/San Sebastián 20018, Spain
| | - Guoqiang Xi
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Hangren Li
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Rong Wu
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Xiuqiao Liu
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Dongfei Lu
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Jiushe He
- School of Materials and Energy, or Electron Microscopy Centre of Lanzhou University, Lanzhou University, Lanzhou 730000, China
| | - Junwei Zhang
- School of Materials and Energy, or Electron Microscopy Centre of Lanzhou University, Lanzhou University, Lanzhou 730000, China
| | - Jianjun Tian
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Linxing Zhang
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China
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3
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Xi G, Pan Z, Fang YW, Tu J, Li H, Yang Q, Liu C, Luo H, Ding J, Xu S, Deng S, Wang Q, Zheng D, Long Y, Jin K, Zhang X, Tian J, Zhang L. Anion-induced robust ferroelectricity in sulfurized pseudo-rhombohedral epitaxial BiFeO 3 thin films via polarization rotation. MATERIALS HORIZONS 2023; 10:4389-4397. [PMID: 37465904 DOI: 10.1039/d3mh00716b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
Polarization rotation caused by various strains, such as substrate and/or chemical strain, is essential to control the electronic structure and properties of ferroelectric materials. This study proposes anion-induced polarization rotation with chemical strain, which effectively improves ferroelectricity. A method for the sulfurization of BiFeO3 thin films by introducing sulfur anions is presented. The sulfurized films exhibited substantial enhancement in room-temperature ferroelectric polarization through polarization rotation and distortion, with a 170% increase in the remnant polarization from 58 to 100.7 μC cm-2. According to first-principles calculations and the results of X-ray absorption spectroscopy and high-angle annular dark-field scanning transmission electron microscopy, this enhancement arose from the introduction of S atoms driving the re-distribution of the lone-pair electrons of Bi, resulting in the rotation of the polarization state from the [001] direction to the [110] or [111] one. The presented method of anion-driven polarization rotation might enable the improvement of the properties of oxide materials.
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Affiliation(s)
- Guoqiang Xi
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China.
| | - Zhao Pan
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
| | - Yue-Wen Fang
- Centro de Física de Materiales (CSIC-UPV/EHU), Manuel de Lardizabal pasealekua 5, 20018 Donostia/San Sebastián, Spain.
- Fisika Aplikatua Saila, Gipuzkoako Ingeniaritza Eskola, University of the Basque Country (UPV/EHU), Europa Plaza 1, 20018 Donostia/San Sebastián, Spain
| | - Jie Tu
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China.
| | - Hangren Li
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China.
| | - Qianqian Yang
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China.
| | - Chen Liu
- Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Huajie Luo
- Beijing Advanced Innovation Center for Materials Genome Engineering, Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Jiaqi Ding
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Shuai Xu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
| | - Shiqing Deng
- Beijing Advanced Innovation Center for Materials Genome Engineering, Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Qingxiao Wang
- Corelab, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Dongxing Zheng
- Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Youwen Long
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - Kuijuan Jin
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
| | - Xixiang Zhang
- Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Jianjun Tian
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China.
| | - Linxing Zhang
- Institute for Advanced Materials Technology, University of Science and Technology Beijing, Beijing 100083, China.
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4
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Cheng X, Xi G, Fang YW, Ding J, Tian J, Zhang L. Chemical and interfacial design in the visible-light-absorbing ferroelectric thin films. Ann Ital Chir 2023. [DOI: 10.1016/j.jeurceramsoc.2023.02.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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5
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Lawrence RA, Ramasse QM, Holsgrove KM, Sando D, Cazorla C, Valanoor N, Arredondo MA. Effects of Multiple Local Environments on Electron Energy Loss Spectra of Epitaxial Perovskite Interfaces. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2022; 126:21453-21466. [PMID: 36582487 PMCID: PMC9791663 DOI: 10.1021/acs.jpcc.2c06879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/15/2022] [Indexed: 06/17/2023]
Abstract
The role of local chemical environments in the electron energy loss spectra of complex multiferroic oxides was studied using computational and experimental techniques. The evolution of the O K-edge across an interface between bismuth ferrite (BFO) and lanthanum strontium manganate (LSMO) was considered through spectral averaging over crystallographically equivalent positions to capture the periodicity of the local O environments. Computational techniques were used to investigate the contribution of individual atomic environments to the overall spectrum, and the role of doping and strain was considered. Chemical variation, even at the low level, was found to have a major impact on the spectral features, whereas strain only induced a small chemical shift to the edge onset energy. Through a combination of these methods, it was possible to explain experimentally observed effects such as spectral flattening near the interface as the combination of spectral responses from multiple local atomic environments.
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Affiliation(s)
- Robert A. Lawrence
- Department
of Physics, University of York, Heslington, North YorkshireYO10 5DD, United Kingdom
| | - Quentin M. Ramasse
- SuperSTEM
Laboratory, SciTech Daresbury Campus, DaresburyWA4 4AD, United Kingdom
- School
of Chemical and Process Engineering and School of Physics and Astronomy, University of Leeds, LeedsLS2 9JT, United Kingdom
| | - Kristina M. Holsgrove
- School
of Mathematics and Physics, Queen’s
University Belfast, BelfastBT7 1NN, Northern Ireland, United Kingdom
| | - Daniel Sando
- School
of Physical and Chemical Sciences, University
of Canterbury, ChristChurch8140, New Zealand
| | - Claudio Cazorla
- Departament
de Fisica, Universitat Politecnica de Catalunya, BarcelonaE-08034, Catalonia, Spain
| | - Nagarajan Valanoor
- School
of Materials Science and Engineering, University
of New South Wales, Sydney, NSW2052, Australia
| | - Miryam A. Arredondo
- School
of Mathematics and Physics, Queen’s
University Belfast, BelfastBT7 1NN, Northern Ireland, United Kingdom
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6
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Lee YJ, Hong K, Na K, Yang J, Lee TH, Kim B, Bark CW, Kim JY, Park SH, Lee S, Jang HW. Nonvolatile Control of Metal-Insulator Transition in VO 2 by Ferroelectric Gating. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2203097. [PMID: 35713476 DOI: 10.1002/adma.202203097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 06/09/2022] [Indexed: 06/15/2023]
Abstract
Controlling phase transitions in correlated materials yields emergent functional properties, providing new aspects to future electronics and a fundamental understanding of condensed matter systems. With vanadium dioxide (VO2 ), a representative correlated material, an approach to control a metal-insulator transition (MIT) behavior is developed by employing a heteroepitaxial structure with a ferroelectric BiFeO3 (BFO) layer to modulate the interaction of correlated electrons. Owing to the defect-alleviated interfaces, the enhanced coupling between the correlated electrons and ferroelectric polarization is successfully demonstrated by showing a nonvolatile control of MIT of VO2 at room temperature. The ferroelectrically-tunable MIT can be realized through the Mott transistor (VO2 /BFO/SrRuO3 ) with a remanent polarization of 80 µC cm-2 , leading to a nonvolatile MIT behavior through the reversible electrical conductance with a large on/off ratio (≈102 ), long retention time (≈104 s), and high endurance (≈103 cycles). Furthermore, the structural phase transition of VO2 is corroborated by ferroelectric polarization through in situ Raman mapping analysis. This study provides novel design principles for heteroepitaxial correlated materials and innovative insight to modulate multifunctional properties.
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Affiliation(s)
- Yoon Jung Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Kootak Hong
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
- Department of Material Science and Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Kyeongho Na
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Jiwoong Yang
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Tae Hyung Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Byungsoo Kim
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Chung Wung Bark
- Department of Electrical Engineering, Gachon University, Seongnam-si, Gyeonggi-do, 13120, South Korea
| | - Jae Young Kim
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sung Hyuk Park
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sanghan Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
- Advanced Institute of Convergence Technology, Seoul National University, Suwon, 16229, Republic of Korea
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7
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Heo Y, Alexe M. Boosting Piezoelectricity under Illumination via the Bulk Photovoltaic Effect and the Schottky Barrier Effect in BiFeO 3. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2105845. [PMID: 34763374 DOI: 10.1002/adma.202105845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 10/30/2021] [Indexed: 06/13/2023]
Abstract
Piezoelectricity is a key functionality induced by conversion between mechanical and electrical energy. Enhancement of piezoelectricity in ferroelectrics often has been realized by complicated synthetical approaches to host unique structural boundaries, so-called morphotropic phase boundaries. While structural approaches are well-known, enhancing piezoelectricity by external stimuli has yet to be clearly explored, despite their advantages of offering not only simple and in situ control without any prior processing requirement, but compatibility with other functionalities. Here, it is shown that light is a powerful control parameter to enhance the piezoelectric property of BiFeO3 single crystals. A series of measurements based on piezoresponse force microscopy and conductive atomic force microscopy, under illumination, reveal a locally enhanced effective piezoelectric coefficient, dzz , eventually showing almost a sevenfold increase. This phenomenon is explained with theoretical models by introducing the two main underlying mechanisms attributed to the bulk photovoltaic effect and Schottky barrier effect, involving the role of open-circuit voltage and photocharge carrier density. These results provide key insights to light-induced piezoelectricity enhancement, offering its potential for multifunctional optoelectronic devices.
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Affiliation(s)
- Yooun Heo
- Department of Physics, University of Warwick, Coventry, CV4 7AL, UK
| | - Marin Alexe
- Department of Physics, University of Warwick, Coventry, CV4 7AL, UK
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8
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Wang Y, Zhang L, Wang J, Li Q, Wang H, Gu L, Chen J, Deng J, Lin K, Huang L, Xing X. Chemical-Pressure-Modulated BaTiO 3 Thin Films with Large Spontaneous Polarization and High Curie Temperature. J Am Chem Soc 2021; 143:6491-6497. [PMID: 33900066 DOI: 10.1021/jacs.1c00605] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Although BaTiO3 is one of the most famous lead-free piezomaterials, it suffers from small spontaneous and low Curie temperature. Chemical pressure, as a mild way to modulate the structures and properties of materials by element doping, has been utilized to enhance the ferroelectricity of BaTiO3 but is not efficient enough. Here, we report a promoted chemical pressure route to prepare high-performance BaTiO3 films, achieving the highest remanent polarization, Pr (100 μC/cm2), to date and high Curie temperature, Tc (above 1000 °C). The negative chemical pressure (∼-5.7 GPa) was imposed by the coherent lattice strain from large cubic BaO to small tetragonal BaTiO3, generating high tetragonality (c/a = 1.12) and facilitating large displacements of Ti. Such negative pressure is especially significant to the bonding states, i.e., hybridization of Ba 5p-O 2p, whereas ionic bonding in bulk and strong bonding of Ti eg and O 2p, which contribute to the tremendously enhanced polarization. The promoted chemical pressure method shows general potential in improving ferroelectric and other functional materials.
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Affiliation(s)
- Yilin Wang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
- Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Linxing Zhang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Jiaou Wang
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Qiang Li
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Huanhua Wang
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Lin Gu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Jun Chen
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Jinxia Deng
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Kun Lin
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Ling Huang
- Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Xianran Xing
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
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9
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Liou YD, Ho SZ, Tzeng WY, Liu YC, Wu PC, Zheng J, Huang R, Duan CG, Kuo CY, Luo CW, Chen YC, Yang JC. Extremely Fast Optical and Nonvolatile Control of Mixed-Phase Multiferroic BiFeO 3 via Instantaneous Strain Perturbation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2007264. [PMID: 33336516 DOI: 10.1002/adma.202007264] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/02/2020] [Indexed: 06/12/2023]
Abstract
Multiferroics-materials that exhibit coupled ferroic orders-are considered to be one of the most promising candidate material systems for next-generation spintronics, memory, low-power nanoelectronics and so on. To advance potential applications, approaches that lead to persistent and extremely fast functional property changes are in demand. Herein, it is revealed that the phase transition and the correlated ferroic orders in multiferroic BiFeO3 (BFO) can be modulated via illumination of single short/ultrashort light pulses. Heat transport simulations and ultrafast optical pump-probe spectroscopy reveal that the transient strain induced by light pulses plays a key role in determining the persistent final states. Having identified the diffusionless phase transformation features via scanning transmission electron microscopy, sequential laser pulse illumination is further demonstrated to perform large-area phase and domain manipulation in a deterministic way. The work contributes to all-optical and rapid nonvolatile control of multiferroicity, offering different routes while designing novel optoelectronics.
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Affiliation(s)
- Yi-De Liou
- Department of Physics, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Sheng-Zhu Ho
- Department of Physics, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Wen-Yen Tzeng
- Department of Electrophysics, National Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Yu-Chen Liu
- Department of Physics, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Ping-Chun Wu
- Department of Physics, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Junding Zheng
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Electronics, East China Normal University, Shanghai, 200241, China
| | - Rong Huang
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Electronics, East China Normal University, Shanghai, 200241, China
| | - Chun-Gang Duan
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Electronics, East China Normal University, Shanghai, 200241, China
| | - Chang-Yang Kuo
- Department of Electrophysics, National Chiao Tung University, Hsinchu, 30010, Taiwan
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
- Max-Planck Institute for Chemical Physics of Solids, Dresden, 01187, Germany
| | - Chih-Wei Luo
- Department of Electrophysics, National Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Yi-Chun Chen
- Department of Physics, National Cheng Kung University, Tainan, 70101, Taiwan
- Center for Quantum Frontiers of Research & Technology (QFort), National Cheng Kung University, Tainan, 70101, Taiwan
| | - Jan-Chi Yang
- Department of Physics, National Cheng Kung University, Tainan, 70101, Taiwan
- Center for Quantum Frontiers of Research & Technology (QFort), National Cheng Kung University, Tainan, 70101, Taiwan
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10
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Zhao Y, Zhao S, Wang L, Wang S, Du Y, Zhao Y, Jin S, Min T, Tian B, Jiang Z, Zhou Z, Liu M. Photovoltaic modulation of ferromagnetism within a FM metal/P-N junction Si heterostructure. NANOSCALE 2021; 13:272-279. [PMID: 33332513 DOI: 10.1039/d0nr07911a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Obtaining small, fast, and energy-efficient spintronic devices requires a new way of manipulating spin states in an effective manner. Here, a prototype photovoltaic spintronic device with a p-n junction Si wafer is proposed which generates photo-induced electrons and changes the ferromagnetism by interfacial charge doping. A ferromagnetic resonance field change of 48.965 mT and 11.306 mT is achieved in Co and CoFeB thin films under sunlight illumination, respectively. The transient reflection (TR) analysis and the first principles calculation reveal the photovoltaic electrons that are doped into the magnetic layer and alter its Fermi level, correspondingly. This finding provides a new method of magnetism modulation and demonstrates a solar-driven spintronic device with abundant energy supply, which may further expand the landscape of spintronics research.
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Affiliation(s)
- Yifan Zhao
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic and Information Engineering, and State Key Laboratory for Mechanical Behavior of Materials, the International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technology, Xi'an Jiaotong University, Xi'an 710049, China.
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11
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Burns SR, Paull O, Juraszek J, Nagarajan V, Sando D. The Experimentalist's Guide to the Cycloid, or Noncollinear Antiferromagnetism in Epitaxial BiFeO 3. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2003711. [PMID: 32954556 DOI: 10.1002/adma.202003711] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/30/2020] [Indexed: 06/11/2023]
Abstract
Bismuth ferrite (BiFeO3 ) is one of the most widely studied multiferroics. The coexistence of ferroelectricity and antiferromagnetism in this compound has driven an intense search for electric-field control of the magnetic order. Such efforts require a complete understanding of the various exchange interactions that underpin the magnetic behavior. An important characteristic of BiFeO3 is its noncollinear magnetic order; namely, a long-period incommensurate spin cycloid. Here, the progress in understanding this fascinating aspect of BiFeO3 is reviewed, with a focus on epitaxial films. The advances made in developing the theory used to capture the complexities of the cycloid are first chronicled, followed by a description of the various experimental techniques employed to probe the magnetic order. To help the reader fully grasp the nuances associated with thin films, a detailed description of the spin cycloid in the bulk is provided. The effects of various perturbations on the cycloid are then described: magnetic and electric fields, doping, epitaxial strain, finite size effects, and temperature. To conclude, an outlook on possible device applications exploiting noncollinear magnetism in BiFeO3 films is presented. It is hoped that this work will act as a comprehensive experimentalist's guide to the spin cycloid in BiFeO3 thin films.
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Affiliation(s)
- Stuart R Burns
- School of Materials Science and Engineering, UNSW Sydney, High Street, Kensington, Sydney, 2052, Australia
- Department of Chemistry, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - Oliver Paull
- School of Materials Science and Engineering, UNSW Sydney, High Street, Kensington, Sydney, 2052, Australia
| | - Jean Juraszek
- Normandie University, UNIROUEN, INSA Rouen, CNRS, GPM, Rouen, 76000, France
| | - Valanoor Nagarajan
- School of Materials Science and Engineering, UNSW Sydney, High Street, Kensington, Sydney, 2052, Australia
| | - Daniel Sando
- School of Materials Science and Engineering, UNSW Sydney, High Street, Kensington, Sydney, 2052, Australia
- Mark Wainwright Analytical Centre, UNSW Sydney, High Street, Kensington, Sydney, 2052, Australia
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12
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Amrillah T, Chen YX, Duong MN, Abdussalam W, Simanjuntak FM, Chen CH, Chu YH, Juang JY. Effects of pillar size modulation on the magneto-structural coupling in self-assembled BiFeO3–CoFe2O4 heteroepitaxy. CrystEngComm 2020. [DOI: 10.1039/c9ce01573f] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The magneto-structural coupling of BiFeO3 (BFO)–CoFe2O4 (CFO)/LaAlO3 (LAO) heteroepitaxy with various lateral sizes of CFO pillars embedded in a BFO matrix was investigated.
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Affiliation(s)
- Tahta Amrillah
- Department of Physics
- Faculty of Science and Technology
- Airlangga University
- Surabaya 60115
- Indonesia
| | - Yu-Xun Chen
- Department of Electrophysics
- National Chiao Tung University
- Hsinchu 30010
- Taiwan
- National Synchrotron Radiation Research Center (NSRRC)
| | - My Ngoc Duong
- Department of Electrophysics
- National Chiao Tung University
- Hsinchu 30010
- Taiwan
| | | | | | - Chia-Hao Chen
- National Synchrotron Radiation Research Center (NSRRC)
- Hsinchu
- Taiwan
| | - Ying-Hao Chu
- Department of Electrophysics
- National Chiao Tung University
- Hsinchu 30010
- Taiwan
- Department of Materials Science and Engineering
| | - Jenh-Yih Juang
- Department of Electrophysics
- National Chiao Tung University
- Hsinchu 30010
- Taiwan
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13
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Ahn Y, Pateras A, Marks SD, Xu H, Zhou T, Luo Z, Chen Z, Chen L, Zhang X, DiChiara AD, Wen H, Evans PG. Nanosecond Optically Induced Phase Transformation in Compressively Strained BiFeO_{3} on LaAlO_{3}. PHYSICAL REVIEW LETTERS 2019; 123:045703. [PMID: 31491252 DOI: 10.1103/physrevlett.123.045703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 05/08/2019] [Indexed: 06/10/2023]
Abstract
Above-band-gap optical illumination of compressively strained BiFeO_{3} induces a transient reversible transformation from a state of coexisting tilted tetragonal-like and rhombohedral-like phases to an untilted tetragonal-like phase. Time-resolved synchrotron x-ray diffraction reveals that the transformation is induced by an ultrafast optically induced lattice expansion that shifts the relative free energies of the tetragonal-like and rhombohedral-like phases. The transformation proceeds at interfaces between regions of the tetragonal-like phase and regions of a mixture of tilted phases, consistent with the motion of a phase boundary. The optically induced transformation demonstrates that there are new optically driven routes towards nanosecond-scale control of phase transformations in ferroelectrics and multiferroics.
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Affiliation(s)
- Youngjun Ahn
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
| | - Anastasios Pateras
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
| | - Samuel D Marks
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
| | - Han Xu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Tao Zhou
- ID01/ESRF, 71 Avenue des Martyrs, 38000 Grenoble Cedex, France
| | - Zhenlin Luo
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zuhuang Chen
- School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055, China
| | - Lang Chen
- Department of Physics, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Xiaoyi Zhang
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Anthony D DiChiara
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Haidan Wen
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Paul G Evans
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
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14
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Zhang F, Mi W, Wang X. Tunable valley and spin splitting in 2H-VSe 2/BiFeO 3(111) triferroic heterostructures. NANOSCALE 2019; 11:10329-10338. [PMID: 31107480 DOI: 10.1039/c9nr01171d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The spin and valley degrees of freedom in monolayer transition metal dichalcogenides have potential applications in spintronics and valleytronics. However, nonvolatile control on the valley and spin degrees of freedom of two-dimensional ferromagnetic materials by multiferroic materials has been rarely reported. Here, the electronic structure of monolayer 2H-VSe2/BiFeO3(111) triferroic heterostructures has been investigated by first-principles calculations. It is found that the V magnetic moment, spin and valley splitting of monolayer VSe2 can be affected by the BiFeO3(111) substrate with ferroelectric polarization and G-type antiferromagnetic order. Particularly, the reversed orientation of ferroelectric polarization and magnetic order of the BiFeO3(111) substrate can modulate the magnitude of spin and valley splitting, and change the spin splitting direction and the spin-dependent valley state in the valence band of monolayer VSe2. The coupling among ferroelectrics, magnetism and ferrovalley is realized in 2H-VSe2/BiFeO3(111) triferroic heterostructures. These results provide a new platform for multiferroic regulation in spintronics and valleytronics, which can enrich the diversity for high-performance devices based on two dimensional multiferroic heterostructures.
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Affiliation(s)
- Fang Zhang
- Tianjin Key Laboratory of Low-Dimensional Materials Physics and Preparation Technology, School of Science, Tianjin University, Tianjin 300354, China.
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15
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Chu K, Yang CH. High-resolution angle-resolved lateral piezoresponse force microscopy: Visualization of in-plane piezoresponse vectors. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2018; 89:123704. [PMID: 30599567 DOI: 10.1063/1.5052662] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 11/12/2018] [Indexed: 06/09/2023]
Abstract
Piezoresponse force microscopy (PFM) is a widely used tool for ferroelectric domain imaging. Lateral PFM (LPFM) utilizes the torsional vibration mode of a probe cantilever; it can distinguish ferroelectric domains having different polarizations with respect to the axis perpendicular to the cantilever, but it is blind to the parallel axis innately. We introduce a high-resolution angle-resolved-LPFM technique that is capable of visualizing full two-dimensional in-plane piezoresponse vector fields. The LPFM signal is analyzed for each pixel with respect to the sample-probe orientation angle with the aid of an image registration technique, and the corresponding local in-plane piezoresponse vector is deduced from the amplitude and phase of the trigonometric curve fitting. This technique provides a pathway for the visualization of complicated ferroelectric and piezoelectric structures.
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Affiliation(s)
- Kanghyun Chu
- Department of Physics, KAIST, Daejeon 34141, South Korea
| | - Chan-Ho Yang
- Department of Physics, KAIST, Daejeon 34141, South Korea
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16
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Complex strain evolution of polar and magnetic order in multiferroic BiFeO 3 thin films. Nat Commun 2018; 9:3764. [PMID: 30242162 PMCID: PMC6155110 DOI: 10.1038/s41467-018-06190-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 08/20/2018] [Indexed: 11/08/2022] Open
Abstract
Electric-field control of magnetism requires deterministic control of the magnetic order and understanding of the magnetoelectric coupling in multiferroics like BiFeO3 and EuTiO3. Despite this critical need, there are few studies on the strain evolution of magnetic order in BiFeO3 films. Here, in (110)-oriented BiFeO3 films, we reveal that while the polarization structure remains relatively unaffected, strain can continuously tune the orientation of the antiferromagnetic-spin axis across a wide angular space, resulting in an unexpected deviation of the classical perpendicular relationship between the antiferromagnetic axis and the polarization. Calculations suggest that this evolution arises from a competition between the Dzyaloshinskii-Moriya interaction and single-ion anisotropy wherein the former dominates at small strains and the two are comparable at large strains. Finally, strong coupling between the BiFeO3 and the ferromagnet Co0.9Fe0.1 exists such that the magnetic anisotropy of the ferromagnet can be effectively controlled by engineering the orientation of the antiferromagnetic-spin axis.
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17
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Zhang L, Chen J, Fan L, Diéguez O, Cao J, Pan Z, Wang Y, Wang J, Kim M, Deng S, Wang J, Wang H, Deng J, Yu R, Scott JF, Xing X. Giant polarization in super-tetragonal thin films through interphase strain. SCIENCE (NEW YORK, N.Y.) 2018; 361:494-497. [PMID: 30072536 DOI: 10.1126/science.aan2433] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 05/31/2018] [Indexed: 11/02/2022]
Abstract
Strain engineering has emerged as a powerful tool to enhance the performance of known functional materials. Here we demonstrate a general and practical method to obtain super-tetragonality and giant polarization using interphase strain. We use this method to create an out-of-plane-to-in-plane lattice parameter ratio of 1.238 in epitaxial composite thin films of tetragonal lead titanate (PbTiO3), compared to 1.065 in bulk. These thin films with super-tetragonal structure possess a giant remanent polarization, 236.3 microcoulombs per square centimeter, which is almost twice the value of known ferroelectrics. The super-tetragonal phase is stable up to 725°C, compared to the bulk transition temperature of 490°C. The interphase-strain approach could enhance the physical properties of other functional materials.
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Affiliation(s)
- Linxing Zhang
- Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Jun Chen
- Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083, China. .,State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
| | - Longlong Fan
- Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Oswaldo Diéguez
- Department of Materials Science and Engineering, Faculty of Engineering, The Raymond and Beverly Sackler Center for Computational Molecular and Materials Science, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Jiangli Cao
- Institute of Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Zhao Pan
- Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Yilin Wang
- Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Jinguo Wang
- Department of Materials Science and Engineering, University of Texas at Dallas, Richardson, TX 75080, USA
| | - Moon Kim
- Department of Materials Science and Engineering, University of Texas at Dallas, Richardson, TX 75080, USA
| | - Shiqing Deng
- National Center for Electron Microscopy in Beijing, School of Materials Science and Engineering, The State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Advanced Materials (MOE), Tsinghua University, Beijing 100084, China
| | - Jiaou Wang
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Huanhua Wang
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Jinxia Deng
- Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Ranbo Yu
- Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - James F Scott
- School of Chemistry and School of Physics, St Andrews University, St Andrews, Fife KY16 9ST, Scotland
| | - Xianran Xing
- Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083, China. .,State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
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18
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Hojo H, Oka K, Shimizu K, Yamamoto H, Kawabe R, Azuma M. Development of Bismuth Ferrite as a Piezoelectric and Multiferroic Material by Cobalt Substitution. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1705665. [PMID: 29920786 DOI: 10.1002/adma.201705665] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 03/06/2018] [Indexed: 06/08/2023]
Abstract
Bismuth ferrite (BiFeO3 ) is the most widely studied multiferroic material with robust ferroelectricity and antiferromagnetic ordering at room temperature. One of the possible device applications of this material is one that utilizes the ferroelectric/piezoelectric property itself such as ferroelectric memory components, actuators, and so on. Other applications are more challenging and make full use of its multiferroic property to realize novel spintronics and magnetic memory devices, which can be addressed electrically as well as magnetically. This progress report summarizes the recent attempt to control the piezoelectric and magnetic properties of BiFeO3 by cobalt substitution.
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Affiliation(s)
- Hajime Hojo
- Laboratory for Materials and Structures, Tokyo Institute of Technology, Yokohama, 226-8503, Japan
| | - Kengo Oka
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, Tokyo, 112-8551, Japan
| | - Keisuke Shimizu
- Laboratory for Materials and Structures, Tokyo Institute of Technology, Yokohama, 226-8503, Japan
| | - Hajime Yamamoto
- Laboratory for Materials and Structures, Tokyo Institute of Technology, Yokohama, 226-8503, Japan
| | - Ryo Kawabe
- Laboratory for Materials and Structures, Tokyo Institute of Technology, Yokohama, 226-8503, Japan
| | - Masaki Azuma
- Laboratory for Materials and Structures, Tokyo Institute of Technology, Yokohama, 226-8503, Japan
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19
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Tu CS, Chen PY, Chen CS, Lin CY, Schmidt V. Tailoring microstructure and photovoltaic effect in multiferroic Nd-substituted BiFeO3 ceramics by processing atmosphere modification. Ann Ital Chir 2018. [DOI: 10.1016/j.jeurceramsoc.2017.11.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Yang X, Zeng R, Ren Z, Wu Y, Chen X, Li M, Chen J, Zhao R, Zhou D, Liao Z, Tian H, Lu Y, Li X, Li J, Han G. Single-Crystal BiFeO 3 Nanoplates with Robust Antiferromagnetism. ACS APPLIED MATERIALS & INTERFACES 2018; 10:5785-5792. [PMID: 29368504 DOI: 10.1021/acsami.7b17449] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Freestanding and single-crystal BiFeO3 (BFO) nanoplates have been successfully synthesized by a fluoride ion-assisted hydrothermal method, and the thickness of the nanoplates can be effectively tailored from 80 to 380 nm by the concentration of fluoride ions. It is revealed that BFO nanoplates grew via an oriented attachment of layer by layer, giving rise to the formation of the inner interface within the nanoplates. In particular, antiferromagnetic (AFM) phase-transition temperature (Néel temperature, TN) of the BFO nanoplates is significantly enhanced from typical 370 to ∼512 °C, whereas the Curie temperature (TC) of the BFO nanoplates is determined to be ∼830 °C, in good agreement with a bulk value. The combination of scanning transmission electron microscopy, electron energy loss spectroscopy, and the first-principle calculations reveals that the interfacial tensile strain remarkably improves the stability of AFM ordering, accounting for the significant enhancement in TN of BFO plates. Correspondingly, the tensile strain induced the polarization and oxygen octahedral tilting has been observed near the interface. The findings presented here suggest that single-crystal BFO nanoplate is an ideal system for exploring an intrinsic magnetoelectric property, where a tensile strain can be a very promising approach to tailor AFM ordering and polarization rotation for an enhanced coupling effect.
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Affiliation(s)
- Xin Yang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Cyrus Tang Center for Sensor Materials and Application, Zhejiang University , Hangzhou 310027, China
- Key Laboratory of Advanced Technique & Preparation for Renewable Energy Materials, Ministry of Education, Yunnan Normal University , Kunming 650500, China
| | - RongGuang Zeng
- Science and Technology on Surface Physics and Chemistry Laboratory , P.O. Box 718-35, Mianyang 621907, China
| | - ZhaoHui Ren
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Cyrus Tang Center for Sensor Materials and Application, Zhejiang University , Hangzhou 310027, China
| | - YanFei Wu
- Institute for Quantum Science and Engineering and Department of Physics, South University of Science and Technology of China , Shenzhen 518055, China
| | - Xing Chen
- Center of Electron Microscope, School of Materials Science and Engineering, Zhejiang University , Hangzhou 310027, China
| | - Ming Li
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Cyrus Tang Center for Sensor Materials and Application, Zhejiang University , Hangzhou 310027, China
| | - JiaLu Chen
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Cyrus Tang Center for Sensor Materials and Application, Zhejiang University , Hangzhou 310027, China
| | - RuoYu Zhao
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Cyrus Tang Center for Sensor Materials and Application, Zhejiang University , Hangzhou 310027, China
| | - DiKui Zhou
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Cyrus Tang Center for Sensor Materials and Application, Zhejiang University , Hangzhou 310027, China
| | - ZhiMin Liao
- State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University , Beijing 100871, China
| | - He Tian
- Center of Electron Microscope, School of Materials Science and Engineering, Zhejiang University , Hangzhou 310027, China
| | - YunHao Lu
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Cyrus Tang Center for Sensor Materials and Application, Zhejiang University , Hangzhou 310027, China
| | - Xiang Li
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Cyrus Tang Center for Sensor Materials and Application, Zhejiang University , Hangzhou 310027, China
| | - JiXue Li
- Center of Electron Microscope, School of Materials Science and Engineering, Zhejiang University , Hangzhou 310027, China
| | - GaoRong Han
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Cyrus Tang Center for Sensor Materials and Application, Zhejiang University , Hangzhou 310027, China
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21
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Roh CJ, Hamh SY, Woo CS, Kim KE, Yang CH, Lee JS. Ferroelectric domain states of a tetragonal BiFeO 3 thin film investigated by second harmonic generation microscopy. NANOSCALE RESEARCH LETTERS 2017; 12:353. [PMID: 28511534 PMCID: PMC5432460 DOI: 10.1186/s11671-017-2126-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 05/04/2017] [Indexed: 06/07/2023]
Abstract
We investigate the ferroelectric state of a tetragonal BiFeO3 thin film grown on a LaAlO3 (001) substrate using an optical second harmonic generation (SHG) microscope. Whereas the ferroelectric state of this material hosts nanometer-sized domains which again form micrometer-sized domains of four different configurations, we could figure out the characteristic features of each domain from the SHG mapping with various sizes of the probe beam, i.e., from 0.7 to 3.9 μm in its diameter. In particular, we demonstrate that a single micrometer-sized domain contributes to the SHG as a coherent summation of the constituent nanometer-sized domains, and multi-micrometer-sized domains contribute to the SHG as an incoherent summation of each micro-domain.
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Affiliation(s)
- Chang Jae Roh
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005 Korea
| | - Sun Young Hamh
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005 Korea
| | - Chang-Soo Woo
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701 Korea
| | - Kwang-Eun Kim
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701 Korea
| | - Chan-Ho Yang
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701 Korea
| | - Jong Seok Lee
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005 Korea
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22
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Chen J, Ke X, Wang J, Yajima T, Qian H, Sun S. Dipole-correlated carrier transportation and orbital reconfiguration in strain-distorted SrNb xTi 1-xO 3/KTaO 3. Phys Chem Chem Phys 2017; 19:29913-29917. [PMID: 29087413 DOI: 10.1039/c7cp06495k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Strong electron-correlations can result in un-conventional transportation behaviour, such as metal-insulator transitions, high temperature superconductivity and bad metal conduction. Here we report a distinct transportation characteristic achieved by actively coupling the carriers with randomly distributed lattice-dipoles for strain-distorted SrNbxTi1-xO3. The strong electron correlations split the conduction band, and lead to a distinguished thermal-emitted carrier transportation with an activation energy of ∼10-2 eV. Further consistency was demonstrated by the respective changes in orbital configurations observed in near edge X-ray absorption fine structures. The present investigation demonstrates new mechanisms for regulating the carrier transportation using polaronic electron correlations.
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Affiliation(s)
- Jikun Chen
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
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23
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Chen D, Nelson CT, Zhu X, Serrao CR, Clarkson JD, Wang Z, Gao Y, Hsu SL, Dedon LR, Chen Z, Yi D, Liu HJ, Zeng D, Chu YH, Liu J, Schlom DG, Ramesh R. A Strain-Driven Antiferroelectric-to-Ferroelectric Phase Transition in La-Doped BiFeO 3 Thin Films on Si. NANO LETTERS 2017; 17:5823-5829. [PMID: 28813160 DOI: 10.1021/acs.nanolett.7b03030] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A strain-driven orthorhombic (O) to rhombohedral (R) phase transition is reported in La-doped BiFeO3 thin films on silicon substrates. Biaxial compressive epitaxial strain is found to stabilize the rhombohedral phase at La concentrations beyond the morphotropic phase boundary (MPB). By tailoring the residual strain with film thickness, we demonstrate a mixed O/R phase structure consisting of O phase domains measuring tens of nanometers wide within a predominant R phase matrix. A combination of piezoresponse force microscopy (PFM), transmission electron microscopy (TEM), polarization-electric field hysteresis loop (P-E loop), and polarization maps reveal that the O-R structural change is an antiferroelectric to ferroelectric (AFE-FE) phase transition. Using scanning transmission electron microscopy (STEM), an atomically sharp O/R MPB is observed. Moreover, X-ray absorption spectra (XAS) and X-ray linear dichroism (XLD) measurements reveal a change in the antiferromagnetic axis orientation from out of plane (R-phase) to in plane (O-phase). These findings provide direct evidence of spin-charge-lattice coupling in La-doped BiFeO3 thin films. Furthermore, this study opens a new pathway to drive the AFE-FE O-R phase transition and provides a route to study the O/R MPB in these films.
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Affiliation(s)
- Deyang Chen
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University , Guangzhou 510006, China
- School of Materials Science and Engineering, South China University of Technology , Guangzhou 510640, China
| | | | | | | | | | - Zhe Wang
- Department of Materials Science and Engineering, Cornell University , Ithaca, New York 14853, United States
| | | | | | | | | | | | - Heng-Jui Liu
- Department of Materials Science and Engineering, National Chiao Tung University , Hsinchu 30010, Taiwan
| | - Dechang Zeng
- School of Materials Science and Engineering, South China University of Technology , Guangzhou 510640, China
| | - Ying-Hao Chu
- Department of Materials Science and Engineering, National Chiao Tung University , Hsinchu 30010, Taiwan
| | - Jian Liu
- Department of Physics and Astronomy, University of Tennessee , Knoxville, Tennessee 37996, United States
| | - Darrell G Schlom
- Department of Materials Science and Engineering, Cornell University , Ithaca, New York 14853, United States
- Kavli Institute at Cornell for Nanoscale Science , Ithaca, New York 14853, United States
| | - Ramamoorthy Ramesh
- Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
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24
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Heo Y, Hu S, Sharma P, Kim KE, Jang BK, Cazorla C, Yang CH, Seidel J. Impact of Isovalent and Aliovalent Doping on Mechanical Properties of Mixed Phase BiFeO 3. ACS NANO 2017; 11:2805-2813. [PMID: 28225589 DOI: 10.1021/acsnano.6b07869] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this study, we report the effect of doping in morphotropic BiFeO3 (BFO) thin films on mechanical properties, revealing variations in the elasticity across the competing phases and their boundaries. Spectroscopic force-distance (F-D) curves and force mapping images by AFM are used to characterize the structure and elastic properties of three BFO thin-film candidates (pure-BFO, Ca-doped BFO, La-doped BFO). We show that softening behavior is observed in isovalent La-doped BFO, whereas hardening is seen in aliovalent Ca-doped BFO. Furthermore, quantitative F-D measurements are extended to show threshold strengths for phase transitions, revealing their dependence on doping in the system. First-principles simulation methods are also employed to understand the observed mechanical properties in pure and doped BFO thin films and to provide microscopic insight on them. These results provide key insight into doping as an effective control parameter to tune nanomechanical properties and suggest an alternative framework to control coupled ferroic functionalities at the nanoscale.
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Affiliation(s)
- Yooun Heo
- School of Materials Science and Engineering and ‡Integrated Materials Design Centre, University of New South Wales (UNSW) Australia , Sydney, New South Wales 2052, Australia
- Department of Physics and ∥Institute for the NanoCentury, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 305-701, Republic of Korea
| | - Songbai Hu
- School of Materials Science and Engineering and ‡Integrated Materials Design Centre, University of New South Wales (UNSW) Australia , Sydney, New South Wales 2052, Australia
- Department of Physics and ∥Institute for the NanoCentury, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 305-701, Republic of Korea
| | - Pankaj Sharma
- School of Materials Science and Engineering and ‡Integrated Materials Design Centre, University of New South Wales (UNSW) Australia , Sydney, New South Wales 2052, Australia
- Department of Physics and ∥Institute for the NanoCentury, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 305-701, Republic of Korea
| | - Kwang-Eun Kim
- School of Materials Science and Engineering and ‡Integrated Materials Design Centre, University of New South Wales (UNSW) Australia , Sydney, New South Wales 2052, Australia
- Department of Physics and ∥Institute for the NanoCentury, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 305-701, Republic of Korea
| | - Byung-Kweon Jang
- School of Materials Science and Engineering and ‡Integrated Materials Design Centre, University of New South Wales (UNSW) Australia , Sydney, New South Wales 2052, Australia
- Department of Physics and ∥Institute for the NanoCentury, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 305-701, Republic of Korea
| | - Claudio Cazorla
- School of Materials Science and Engineering and ‡Integrated Materials Design Centre, University of New South Wales (UNSW) Australia , Sydney, New South Wales 2052, Australia
- Department of Physics and ∥Institute for the NanoCentury, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 305-701, Republic of Korea
| | - Chan-Ho Yang
- School of Materials Science and Engineering and ‡Integrated Materials Design Centre, University of New South Wales (UNSW) Australia , Sydney, New South Wales 2052, Australia
- Department of Physics and ∥Institute for the NanoCentury, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 305-701, Republic of Korea
| | - Jan Seidel
- School of Materials Science and Engineering and ‡Integrated Materials Design Centre, University of New South Wales (UNSW) Australia , Sydney, New South Wales 2052, Australia
- Department of Physics and ∥Institute for the NanoCentury, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 305-701, Republic of Korea
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25
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Yoo K, Jeon BG, Chun SH, Patil DR, Lim YJ, Noh SH, Gil J, Cheon J, Kim KH. Quantitative Measurements of Size-Dependent Magnetoelectric Coupling in Fe 3O 4 Nanoparticles. NANO LETTERS 2016; 16:7408-7413. [PMID: 27801590 DOI: 10.1021/acs.nanolett.6b02978] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Bulk magnetite (Fe3O4), the loadstone used in magnetic compasses, has been known to exhibit magnetoelectric (ME) properties below ∼10 K; however, corresponding ME effects in Fe3O4 nanoparticles have been enigmatic. We investigate quantitatively the ME coupling of spherical Fe3O4 nanoparticles with uniform diameters (d) from 3 to 15 nm embedded in an insulating host, using a sensitive ME susceptometer. The intrinsic ME susceptibility (MES) of the Fe3O4 nanoparticles is measured, exhibiting a maximum value of ∼0.6 ps/m at 5 K for d = 15 nm. We found that the MES is reduced with reduced d but remains finite until d = ∼5 nm, which is close to the critical thickness for observing the Verwey transition. Moreover, with reduced diameter the critical temperature below which the MES becomes conspicuous increased systematically from 9.8 K in the bulk to 19.7 K in the nanoparticles with d = 7 nm, reflecting the core-shell effect on the ME properties. These results point to a new pathway for investigating ME effect in various nanomaterials.
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Affiliation(s)
- Kyongjun Yoo
- Center for Novel States of Complex Materials Research and Institute of Applied Physics, Department of Physics and Astronomy, Seoul National University , Seoul 151-747, South Korea
| | - Byung-Gu Jeon
- Center for Novel States of Complex Materials Research and Institute of Applied Physics, Department of Physics and Astronomy, Seoul National University , Seoul 151-747, South Korea
| | - Sae Hwan Chun
- Center for Novel States of Complex Materials Research and Institute of Applied Physics, Department of Physics and Astronomy, Seoul National University , Seoul 151-747, South Korea
| | - Deepak Rajaram Patil
- Center for Novel States of Complex Materials Research and Institute of Applied Physics, Department of Physics and Astronomy, Seoul National University , Seoul 151-747, South Korea
| | - Yong-Jun Lim
- Center for Nanomedicine, Institute for Basic Science (IBS) , Seoul 03722, South Korea
| | - Seung-Hyun Noh
- Center for Nanomedicine, Institute for Basic Science (IBS) , Seoul 03722, South Korea
| | - Jihyo Gil
- Center for Nanomedicine, Institute for Basic Science (IBS) , Seoul 03722, South Korea
| | - Jinwoo Cheon
- Center for Nanomedicine, Institute for Basic Science (IBS) , Seoul 03722, South Korea
| | - Kee Hoon Kim
- Center for Novel States of Complex Materials Research and Institute of Applied Physics, Department of Physics and Astronomy, Seoul National University , Seoul 151-747, South Korea
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26
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Shimizu K, Hojo H, Ikuhara Y, Azuma M. Enhanced Piezoelectric Response due to Polarization Rotation in Cobalt-Substituted BiFeO 3 Epitaxial Thin Films. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:8639-8644. [PMID: 27554138 DOI: 10.1002/adma.201602450] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 07/18/2016] [Indexed: 06/06/2023]
Abstract
Polarization rotation induced by an external electric field in piezoelectric materials such as PbZr1-x Tix O3 is generally regarded as the origin of their large piezoelectric responses. Here, the piezoelectric responses of high-quality cobalt-substituted BiFeO3 epitaxial thin films with monoclinic distortions are systematically examined. It is demonstrated that polarization rotation plays a crucial role in improving the piezoelectric responses in this material.
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Affiliation(s)
- Keisuke Shimizu
- Materials and Structures Laboratory, Tokyo Institute of Technology, Nagatsuta, Yokohama, 226-8503, Japan
| | - Hajime Hojo
- Materials and Structures Laboratory, Tokyo Institute of Technology, Nagatsuta, Yokohama, 226-8503, Japan.
| | - Yuichi Ikuhara
- Institute of Engineering Innovation, University of Tokyo, Yayoi, Bunkyo, 113-8656, Japan
| | - Masaki Azuma
- Materials and Structures Laboratory, Tokyo Institute of Technology, Nagatsuta, Yokohama, 226-8503, Japan.
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27
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Damodaran AR, Agar JC, Pandya S, Chen Z, Dedon L, Xu R, Apgar B, Saremi S, Martin LW. New modalities of strain-control of ferroelectric thin films. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:263001. [PMID: 27187744 DOI: 10.1088/0953-8984/28/26/263001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Ferroelectrics, with their spontaneous switchable electric polarization and strong coupling between their electrical, mechanical, thermal, and optical responses, provide functionalities crucial for a diverse range of applications. Over the past decade, there has been significant progress in epitaxial strain engineering of oxide ferroelectric thin films to control and enhance the nature of ferroelectric order, alter ferroelectric susceptibilities, and to create new modes of response which can be harnessed for various applications. This review aims to cover some of the most important discoveries in strain engineering over the past decade and highlight some of the new and emerging approaches for strain control of ferroelectrics. We discuss how these new approaches to strain engineering provide promising routes to control and decouple ferroelectric susceptibilities and create new modes of response not possible in the confines of conventional strain engineering. To conclude, we will provide an overview and prospectus of these new and interesting modalities of strain engineering helping to accelerate their widespread development and implementation in future functional devices.
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Affiliation(s)
- Anoop R Damodaran
- Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, California, USA
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28
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Amrillah T, Vandrangi SK, Bitla Y, Do TH, Liao SC, Tsai CY, Chin YY, Liu YT, Lin ML, He Q, Lin HJ, Lee HY, Lai CH, Arenholz E, Juang JY, Chu YH. Tuning the magnetic properties of self-assembled BiFeO3-CoFe2O4 heteroepitaxy by magneto-structural coupling. NANOSCALE 2016; 8:8847-8854. [PMID: 27072287 DOI: 10.1039/c5nr09269h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Magnetic and multiferroic nanocomposites with two distinct phases have been a topic of intense research for their profound potential applications in the field of spintronics. In addition to growing high-quality phase separated heteroepitaxial nanocomposites, the strain engineering that is conducive to enhance the tunability of material properties, in general, and the magnetic properties, in particular, is of utmost importance in exploring new possibilities. Here, we investigated the magneto-structural coupling between antiferromagnetic BiFeO3 (BFO) and ferrimagnetic CoFe2O4 (CFO) in self-assembled vertically aligned nanocomposites grown on LaAlO3 (LAO) and SrTiO3 (STO) substrates. We found that BFO exhibits tetragonal (T) and rhombohedral (R) structures as the stable phases and CFO has high magnetocrystalline anisotropy even in the form of nanocomposites. The temperature and magnetic field dependent magnetizations of T_BFO-CFO/LAO and R_BFO-CFO/STO nanocomposites primarily demonstrate the magnetoelastic coupling between these variants.
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Affiliation(s)
- Tahta Amrillah
- Department of Electrophysics, National Chiao Tung University, Hsinchu 30010, Taiwan.
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29
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Chu K, Jang BK, Sung JH, Shin YA, Lee ES, Song K, Lee JH, Woo CS, Kim SJ, Choi SY, Koo TY, Kim YH, Oh SH, Jo MH, Yang CH. Enhancement of the anisotropic photocurrent in ferroelectric oxides by strain gradients. NATURE NANOTECHNOLOGY 2015; 10:972-979. [PMID: 26322941 DOI: 10.1038/nnano.2015.191] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Accepted: 07/23/2015] [Indexed: 06/04/2023]
Abstract
The phase separation of multiple competing structural/ferroelectric phases has attracted particular attention owing to its excellent electromechanical properties. Little is known, however, about the strain-gradient-induced electronic phenomena at the interface of competing structural phases. Here, we investigate the polymorphic phase interface of bismuth ferrites using spatially resolved photocurrent measurements, present the observation of a large enhancement of the anisotropic interfacial photocurrent by two orders of magnitude, and discuss the possible mechanism on the basis of the flexoelectric effect. Nanoscale characterizations of the photosensitive area through position-sensitive angle-resolved piezoresponse force microscopy and electron holography techniques, in conjunction with phase field simulation, reveal that regularly ordered dipole-charged domain walls emerge. These findings offer practical implications for complex oxide optoelectronics.
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Affiliation(s)
- Kanghyun Chu
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| | - Byung-Kweon Jang
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| | - Ji Ho Sung
- Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 790-784, Korea
- Center for Artificial Low-Dimensional Electronic Systems, Institute for Basic Science (IBS), POSTECH, Pohang, Gyeongbuk 790-784, Republic of Korea
| | - Yoon Ah Shin
- Department of Materials Science and Engineering, POSTECH, Pohang, Gyeongbuk 790-784, Republic of Korea
| | - Eui-Sup Lee
- Graduate School of Nanoscience and Technology, KAIST, Daejeon 305-701, Republic of Korea
| | - Kyung Song
- Department of Materials Science and Engineering, POSTECH, Pohang, Gyeongbuk 790-784, Republic of Korea
| | - Jin Hong Lee
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| | - Chang-Su Woo
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| | - Seung Jin Kim
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| | - Si-Young Choi
- Department of Materials Modeling and Characterization, Korea Institute of Materials Science, Changwon 642-831, Republic of Korea
| | - Tae Yeong Koo
- Pohang Accelerator Laboratory, POSTECH, Pohang, Gyeongbuk 790-784, Republic of Korea
| | - Yong-Hyun Kim
- Graduate School of Nanoscience and Technology, KAIST, Daejeon 305-701, Republic of Korea
| | - Sang-Ho Oh
- Department of Materials Science and Engineering, POSTECH, Pohang, Gyeongbuk 790-784, Republic of Korea
| | - Moon-Ho Jo
- Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 790-784, Korea
- Center for Artificial Low-Dimensional Electronic Systems, Institute for Basic Science (IBS), POSTECH, Pohang, Gyeongbuk 790-784, Republic of Korea
- Department of Materials Science and Engineering, POSTECH, Pohang, Gyeongbuk 790-784, Republic of Korea
| | - Chan-Ho Yang
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
- KAIST Institute for the NanoCentury, Daejeon 305-701, Republic of Korea
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30
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Peng P, Hu A, Gerlich AP, Zou G, Liu L, Zhou YN. Joining of Silver Nanomaterials at Low Temperatures: Processes, Properties, and Applications. ACS APPLIED MATERIALS & INTERFACES 2015; 7:12597-12618. [PMID: 26005792 DOI: 10.1021/acsami.5b02134] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A review is provided, which first considers low-temperature diffusion bonding with silver nanomaterials as filler materials via thermal sintering for microelectronic applications, and then other recent innovations in low-temperature joining are discussed. The theoretical background and transition of applications from micro to nanoparticle (NP) pastes based on joining using silver filler materials and nanojoining mechanisms are elucidated. The mechanical and electrical properties of sintered silver nanomaterial joints at low temperatures are discussed in terms of the key influencing factors, such as porosity and coverage of substrates, parameters for the sintering processes, and the size and shape of nanomaterials. Further, the use of sintered silver nanomaterials for printable electronics and as robust surface-enhanced Raman spectroscopy substrates by exploiting their optical properties is also considered. Other low-temperature nanojoining strategies such as optical welding of silver nanowires (NWs) through a plasmonic heating effect by visible light irradiation, ultrafast laser nanojoining, and ion-activated joining of silver NPs using ionic solvents are also summarized. In addition, pressure-driven joining of silver NWs with large plastic deformation and self-joining of gold or silver NWs via oriented attachment of clean and activated surfaces are summarized. Finally, at the end of this review, the future outlook for joining applications with silver nanomaterials is explored.
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Affiliation(s)
| | - Anming Hu
- §Mechanical, Aerospace and Biomedical Engineering Department, University of Tennessee, 1512 Middle Drive, Knoxville, Tennessee 37996-2210, United States
| | | | - Guisheng Zou
- ∥Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
| | - Lei Liu
- ∥Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
| | - Y Norman Zhou
- ∥Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
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31
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Heo Y, Jang BK, Kim SJ, Yang CH, Seidel J. Nanoscale mechanical softening of morphotropic BiFeO3. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:7568-7572. [PMID: 25327302 DOI: 10.1002/adma.201401958] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Revised: 09/04/2014] [Indexed: 06/04/2023]
Abstract
Mechanical switching can be used to form phase-transformed areas in mixed-phase bismuth ferrite thin films, which might be exploited to yield various soft elastic areas with greatly reduced Young's modulus on the nanoscale. Due to the mechanically susceptible nature of morphotropic phase boundaries in multiferroics, combined elastic control of electronic, magnetic, and ferroelectric properties becomes possible.
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Affiliation(s)
- Yooun Heo
- School of Materials Science and Engineering, University of New South Wales, Sydney, NSW,, 2052, Australia
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32
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Sando D, Barthélémy A, Bibes M. BiFeO3 epitaxial thin films and devices: past, present and future. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2014; 26:473201. [PMID: 25352066 DOI: 10.1088/0953-8984/26/47/473201] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The celebrated renaissance of the multiferroics family over the past ten years has also been that of its most paradigmatic member, bismuth ferrite (BiFeO3). Known since the 1960s to be a high temperature antiferromagnet and since the 1970s to be ferroelectric, BiFeO3 only had its bulk ferroic properties clarified in the mid-2000s. It is however the fabrication of BiFeO3 thin films and their integration into epitaxial oxide heterostructures that have fully revealed its extraordinarily broad palette of functionalities. Here we review the first decade of research on BiFeO3 films, restricting ourselves to epitaxial structures. We discuss how thickness and epitaxial strain influence not only the unit cell parameters, but also the crystal structure, illustrated for instance by the discovery of the so-called T-like phase of BiFeO3. We then present its ferroelectric and piezoelectric properties and their evolution near morphotropic phase boundaries. Magnetic properties and their modification by thickness and strain effects, as well as optical parameters, are covered. Finally, we highlight various types of devices based on BiFeO3 in electronics, spintronics, and optics, and provide perspectives for the development of further multifunctional devices for information technology and energy harvesting.
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Affiliation(s)
- D Sando
- Unité Mixte de Physique CNRS/Thales, 1 Avenue Fresnel, Campus de l'Ecole Polytechnique, 91767 Palaiseau, France, and Université Paris Sud, 91405 Orsay, France. Center for Correlated Electron Systems, Institute for Basic Science (IBS), and Department of Physics and Astronomy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-747, Republic of Korea
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33
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34
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Basu T, Paulose PL, Iyer KK, Singh K, Mohapatra N, Chowki S, Gonde B, Sampathkumaran EV. A reentrant phenomenon in magnetic and dielectric properties of Dy2BaNiO5 and an intriguing influence of external magnetic field. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2014; 26:172202. [PMID: 24722401 DOI: 10.1088/0953-8984/26/17/172202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report that the spin-chain compound Dy2BaNiO5, recently proven by us to exhibit magnetoelectric coupling below its Néel temperature (TN) of 58 K, exhibits strong frequency-dependent behavior in ac magnetic susceptibility and complex dielectric properties at low temperatures (<10 K), mimicking the 'reentrant' multiglass phenomenon. Such a behavior is not known among undoped compounds. A new finding in the field of multiferroics is that the characteristic magnetic feature at low temperatures moves towards higher temperatures in the presence of a magnetic field (H), whereas the corresponding dielectric feature shifts towards lower temperatures with H, unlike the situation near TN. This observation indicates that the alignment of spins by external magnetic fields tends to inhibit glassy-like slow electric-dipole dynamics, at least in this system, possibly arising from peculiarities in the magnetic structure.
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Affiliation(s)
- Tathamay Basu
- Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400005, India
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35
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Yang CH, Kan D, Takeuchi I, Nagarajan V, Seidel J. Doping BiFeO3: approaches and enhanced functionality. Phys Chem Chem Phys 2014; 14:15953-62. [PMID: 23108014 DOI: 10.1039/c2cp43082g] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
BiFeO(3) is one of the most studied multiferroic materials. Both its magnetic and ferroelectric properties can be influenced by doping. A large body of work on the doped material has been presented in the past couple of years. In this paper we provide a perspective on general doping concepts and their impact on the material's functionality.
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Affiliation(s)
- Chan-Ho Yang
- Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
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36
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Zhao YJ, Yin ZG, Zhang XW, Fu Z, Sun BJ, Wang JX, Wu JL. Heteroepitaxy of tetragonal BiFeO(3) on hexagonal sapphire(0001). ACS APPLIED MATERIALS & INTERFACES 2014; 6:2639-2646. [PMID: 24467526 DOI: 10.1021/am405115y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Highly elongated BiFeO3 is epitaxially grown on hexagonal sapphire(0001) substrate within a rather narrow synthesis window. Both X-ray reciprocal space maps and Raman characterizations reveal that it is of true tetragonal symmetry but not the commonly observed MC type monoclinic structure. The tetragonal BiFeO3 film exhibits an island growth mode, with the island edges oriented parallel to the ⟨10-10⟩ and ⟨12-30⟩ directions of the sapphire substrate. With increasing deposition time, a transition from square island to elongated island and then to a continuous film is observed. The metastable tetragonal phase can remain on the substrate without relaxation to the thermally stable rhombohedral phase up to a critical thickness of 450 nm, providing an exciting opportunity for practicable lead-free ferroelectrics. These results facilitate a better understanding of the phase stability of BiFeO3 polymorphs and enrich the knowledge about the heteroepitaxial growth mechanism of functional oxides on symmetry-mismatched substrates.
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Affiliation(s)
- Y J Zhao
- Key Lab of Semiconductor Materials Science and ‡State Key Laboratory of Solid-State Lighting, Institute of Semiconductors, Chinese Academy of Sciences , Beijing 100083, People's Republic of China
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37
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Ikeda-Ohno A, Lim JS, Ohkochi T, Yang CH, Seidel J. Investigation of continuous changes in the electric-field-induced electronic state in Bi1−xCaxFeO3−δ. Phys Chem Chem Phys 2014; 16:17412-6. [DOI: 10.1039/c4cp02170c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Systematic changes in the electronic structure of Bi1−xCaxFeO3−δ, which are induced by electrically controlled hole carrier doping, are observed by photoemission electron microscopy (PEEM).
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Affiliation(s)
- Atsushi Ikeda-Ohno
- School of Civil and Environmental Engineering
- The University of New South Wales
- Sydney, Australia
- Institute for Environmental Research
- Australian Nuclear Science and Technology Organisation
| | - Ji Soo Lim
- Department of Physics
- Korea Advanced Institute of Science and Technology
- , Republic of Korea
| | - Takuo Ohkochi
- Japan Synchrotron Radiation Research Institute
- SPring-8
- , Japan
| | - Chan-Ho Yang
- Department of Physics
- Korea Advanced Institute of Science and Technology
- , Republic of Korea
- Institute for the NanoCentury
- Korea Advanced Institute of Science and Technology
| | - Jan Seidel
- School of Materials Science and Engineering
- The University of New South Wales
- Sydney, Australia
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38
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Beekman C, Siemons W, Ward TZ, Chi M, Howe J, Biegalski MD, Balke N, Maksymovych P, Farrar AK, Romero JB, Gao P, Pan XQ, Tenne DA, Christen HM. Phase transitions, phase coexistence, and piezoelectric switching behavior in highly strained BiFeO(3) films. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:5561-7. [PMID: 23847158 DOI: 10.1002/adma.201302066] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Indexed: 05/12/2023]
Abstract
Highly strained BiFeO3 films transition into a true tetragonal state at 430 °C but remain polar to much higher temperatures (∼800 °C). Piezoelectric switching is only possible up to 300 °C, i.e., at temperatures for which strain stabilizes the stripe-like coexistence of multiple polymorphs.
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Affiliation(s)
- C Beekman
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
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39
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Liu M, Hoffman J, Wang J, Zhang J, Nelson-Cheeseman B, Bhattacharya A. Non-volatile ferroelastic switching of the Verwey transition and resistivity of epitaxial Fe3O4/PMN-PT (011). Sci Rep 2013; 3:1876. [PMID: 23703150 PMCID: PMC3662216 DOI: 10.1038/srep01876] [Citation(s) in RCA: 138] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 03/28/2013] [Indexed: 11/09/2022] Open
Abstract
A central goal of electronics based on correlated materials or 'Mottronics' is the ability to switch between distinct collective states with a control voltage. Small changes in structure and charge density near a transition can tip the balance between competing phases, leading to dramatic changes in electronic and magnetic properties. In this work, we demonstrate that an electric field induced two-step ferroelastic switching pathway in (011) oriented 0.71Pb(Mg1/3Nb2/3)O3-0.29PbTiO3 (PMN-PT) substrates can be used to tune the Verwey metal-insulator transition in epitaxial Fe3O4 films in a stable and reversible manner. We also observe robust non-volatile resistance switching in Fe3O4 up to room temperature, driven by ferroelastic strain. These results provides a framework for realizing non-volatile and reversible tuning of order parameters coupled to lattice-strain in epitaxial oxide heterostructures over a broad range of temperatures, with potential device applications.
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Affiliation(s)
- Ming Liu
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL 60439 (USA)
| | - Jason Hoffman
- Material Science Division, Argonne National Laboratory, Argonne, IL 60439 (USA)
| | - Jing Wang
- Department of Physics, Beijing Normal University, Beijing 100875 (China)
| | - Jinxing Zhang
- Department of Physics, Beijing Normal University, Beijing 100875 (China)
| | | | - Anand Bhattacharya
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL 60439 (USA)
- Material Science Division, Argonne National Laboratory, Argonne, IL 60439 (USA)
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40
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Escorihuela-Sayalero C, Diéguez O, Íñiguez J. Strain engineering magnetic frustration in perovskite oxide thin films. PHYSICAL REVIEW LETTERS 2012; 109:247202. [PMID: 23368370 DOI: 10.1103/physrevlett.109.247202] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2012] [Revised: 10/05/2012] [Indexed: 06/01/2023]
Abstract
Our first-principles results show that geometric frustration can be induced in thin films of multiferroic BiFeO(3). We find that competing magnetic interactions occur in the so-called supertetragonal phase of this material, which can be grown on strongly compressive substrates. We show that the frustration level can be tuned by appropriately choosing the substrate; in fact, the phase diagram of the films presents a critical line at which the three-dimensional spin order gets annihilated. We argue that these effects are not exclusive to BiFeO(3) and predict that they also occur in BiCoO(3).
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41
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Yang Y, Ren W, Stengel M, Yan XH, Bellaiche L. Revisiting properties of ferroelectric and multiferroic thin films under tensile strain from first principles. PHYSICAL REVIEW LETTERS 2012; 109:057602. [PMID: 23006208 DOI: 10.1103/physrevlett.109.057602] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Indexed: 06/01/2023]
Abstract
First-principles calculations are performed to revisit properties of (001) epitaxial BiFeO(3) (BFO) and PbTiO(3) thin films under tensile strain. While these two films possess different ground states when experiencing no misfit strain, they both exhibit the same, previously unknown phase for tensile strains above ≃5% at T = 0 K. This novel state is of orthorhombic Pmc2(1) symmetry and is macroscopically characterized by a large in-plane polarization coexisting with oxygen octahedra tilting in-phase about the out-of-plane direction. On a microscopic point of view, this Pmc2(1) state exhibits short atomic bonds and zigzag cation displacement patterns, unlike conventional ferroelectric phases and typical domains. Such unusual inhomogeneous patterns originate from the coexistence of polar and antiferroelectric distortions having the same magnitude and lead BFO films to be the first known material for which orbital ordering coexists with a large polarization. Furthermore, this Pmc2(1) state is also found in other perovskite films under tensile strain, which emphasizes its generality.
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Affiliation(s)
- Yurong Yang
- Physics Department, University of Arkansas, Fayetteville, 72701, USA
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42
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Kim I, Jeon BG, Patil D, Patil S, Nénert G, Kim KH. Observation of multiferroic properties in pyroxene NaFeGe2O6. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2012; 24:306001. [PMID: 22763611 DOI: 10.1088/0953-8984/24/30/306001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We report the observation of multiferroicity in a clinopyroxene NaFeGe(2)O(6) polycrystal from the investigation of its electrical and magnetic properties. Following the previously known first magnetic transition at T(N1) = 13 K, a second magnetic transition appears at T(N2) = 11.8 K in the temperature dependence of the magnetization. A ferroelectric polarization starts to develop clearly at T(N2) rather than T(N1) and its magnitude increases up to ~13 μC m(-2) at 5 K, supporting the idea that the ferroelectric state in NaFeGe(2)O(6) stems from a helical spin order stabilized below T(N2). When a magnetic field of 90 kOe is applied, the electric polarization decreases to 9 μC m(-2) and T(N2) slightly increases by 0.5 K. At intermediate magnetic fields, around 28 and 78 kOe, anomalies in the magnetoelectric current, magnetoelectric susceptibility, and field derivative of magnetization curves are found, indicating field-induced spin-state transitions. Based on these electrical and magnetic properties, we provide a detailed low temperature phase diagram up to 90 kOe, and discuss the nature of each phase of NaFeGe(2)O(6).
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Affiliation(s)
- Ingyu Kim
- CeNSCMR, Department of Physics and Astronomy, Seoul National University, Seoul, Korea
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43
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Chen YC, He Q, Chu FN, Huang YC, Chen JW, Liang WI, Vasudevan RK, Nagarajan V, Arenholz E, Kalinin SV, Chu YH. Electrical control of multiferroic orderings in mixed-phase BiFeO₃ films. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:3070-3075. [PMID: 22570278 DOI: 10.1002/adma.201200463] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Revised: 03/21/2012] [Indexed: 05/31/2023]
Affiliation(s)
- Yi-Chun Chen
- Department of Physics, National Cheng Kung University, Tainan 70101, Taiwan.
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44
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Liu YY, Vasudevan RK, Pan K, Xie SH, Liang WI, Kumar A, Jesse S, Chen YC, Chu YH, Nagarajan V, Kalinin SV, Li JY. Controlling magnetoelectric coupling by nanoscale phase transformation in strain engineered bismuth ferrite. NANOSCALE 2012; 4:3175-3183. [PMID: 22517294 DOI: 10.1039/c2nr00039c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The magnetoelectric coupling in multiferroic materials is promising for a wide range of applications, yet manipulating magnetic ordering by electric field proves elusive to obtain and difficult to control. In this paper, we explore the prospect of controlling magnetic ordering in misfit strained bismuth ferrite (BiFeO(3), BFO) films, combining theoretical analysis, numerical simulations, and experimental characterizations. Electric field induced transformation from a tetragonal phase to a distorted rhombohedral one in strain engineered BFO films has been identified by thermodynamic analysis, and realized by scanning probe microscopy (SPM) experiment. By breaking the rotational symmetry of a tip-induced electric field as suggested by phase field simulation, the morphology of distorted rhombohedral variants has been delicately controlled and regulated. Such capabilities enable nanoscale control of magnetoelectric coupling in strain engineered BFO films that is difficult to achieve otherwise, as demonstrated by phase field simulations.
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Affiliation(s)
- Y Y Liu
- Faculty of Materials, Optoelectronics and Physics, and Key Laboratory of Low Dimensional Materials & Application Technology of Ministry of Education, Xiangtan University, Xiangtan, Hunan 411105, China
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45
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Chun SH, Chai YS, Jeon BG, Kim HJ, Oh YS, Kim I, Kim H, Jeon BJ, Haam SY, Park JY, Lee SH, Chung JH, Park JH, Kim KH. Electric field control of nonvolatile four-state magnetization at room temperature. PHYSICAL REVIEW LETTERS 2012; 108:177201. [PMID: 22680900 DOI: 10.1103/physrevlett.108.177201] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Revised: 02/23/2012] [Indexed: 06/01/2023]
Abstract
We find the realization of large converse magnetoelectric (ME) effects at room temperature in a magnetoelectric hexaferrite Ba0.52Sr2.48Co2Fe24O41 single crystal, in which rapid change of electric polarization in low magnetic fields (about 5 mT) is coined to a large ME susceptibility of 3200 ps/m. The modulation of magnetization then reaches up to 0.62μ(B)/f.u. in an electric field of 1.14 MV/m. We find further that four ME states induced by different ME poling exhibit unique, nonvolatile magnetization versus electric field curves, which can be approximately described by an effective free energy with a distinct set of ME coefficients.
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Affiliation(s)
- Sae Hwan Chun
- CeNSCMR, Department of Physics and Astronomy, Seoul National University, Seoul, Korea.
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46
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Daumont C, Ren W, Infante IC, Lisenkov S, Allibe J, Carrétéro C, Fusil S, Jacquet E, Bouvet T, Bouamrane F, Prosandeev S, Geneste G, Dkhil B, Bellaiche L, Barthélémy A, Bibes M. Strain dependence of polarization and piezoelectric response in epitaxial BiFeO3 thin films. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2012; 24:162202. [PMID: 22467186 DOI: 10.1088/0953-8984/24/16/162202] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Epitaxial strain has recently emerged as a powerful means to engineer the properties of ferroelectric thin films, for instance to enhance the ferroelectric Curie temperature (T(C)) in BaTiO(3). However, in multiferroic BiFeO(3) thin films an unanticipated strain-driven decrease of T(C) was reported and ascribed to the peculiar competition between polar and antiferrodistortive instabilities. Here, we report a systematic characterization of the room-temperature ferroelectric and piezoelectric properties for strain levels ranging between -2.5% and +1%. We find that polarization and the piezoelectric coefficient increase by about 20% and 250%, respectively, in this strain range. These trends are well reproduced by first-principles-based techniques.
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Affiliation(s)
- C Daumont
- Unité Mixte de Physique CNRS/Thales, Palaiseau, France
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47
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Peng P, Hu A, Huang H, Gerlich AP, Zhao B, Zhou YN. Room-temperature pressureless bonding with silver nanowire paste: towards organic electronic and heat-sensitive functional devices packaging. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm31979a] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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