1
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Okamoto J, Wang RP, Chu YY, Shiu HW, Singh A, Huang HY, Mou CY, Teh S, Jeng HT, Du K, Xu X, Cheong SW, Du CH, Chen CT, Fujimori A, Huang DJ. Giant X-Ray Circular Dichroism in a Time-Reversal Invariant Antiferromagnet. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2309172. [PMID: 38391035 DOI: 10.1002/adma.202309172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 02/09/2024] [Indexed: 02/24/2024]
Abstract
X-ray circular dichroism, arising from the contrast in X-ray absorption between opposite photon helicities, serves as a spectroscopic tool to measure the magnetization of ferromagnetic materials and identify the handedness of chiral crystals. Antiferromagnets with crystallographic chirality typically lack X-ray magnetic circular dichroism because of time-reversal symmetry, yet exhibit weak X-ray natural circular dichroism. Here, the observation of giant natural circular dichroism in the Ni L3-edge X-ray absorption of Ni3TeO6 is reported, a polar and chiral antiferromagnet with effective time-reversal symmetry. To unravel this intriguing phenomenon, a phenomenological model is proposed that classifies the movement of photons in a chiral crystal within the same symmetry class as that of a magnetic field. The coupling of X-ray polarization with the induced magnetization yields giant X-ray natural circular dichroism, revealing typical ferromagnetic behaviors allowed by the symmetry in an antiferromagnet, i.e., the altermagnetism of Ni3TeO6. The findings provide evidence for the interplay between magnetism and crystal chirality in natural optical activity. Additionally, the first example of a new class of magnetic materials exhibiting circular dichroism is established with time-reversal symmetry.
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Affiliation(s)
- Jun Okamoto
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Ru-Pan Wang
- Department of Physics, University of Hamburg, Luruper Chaussee 149, G610, 22761, Hamburg, Germany
| | - Yen-Yi Chu
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Hung-Wei Shiu
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Amol Singh
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Hsiao-Yu Huang
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Chung-Yu Mou
- Center for Quantum Science and Technology and Department of Physics, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Sukhito Teh
- Department of Physics, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Horng-Tay Jeng
- Department of Physics, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Kai Du
- Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, NJ, 08854, USA
| | - Xianghan Xu
- Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, NJ, 08854, USA
| | - Sang-Wook Cheong
- Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, NJ, 08854, USA
| | - Chao-Hung Du
- Department of Physics, Tamkang University, Tamsui, 251, Taiwan
| | - Chien-Te Chen
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Atsushi Fujimori
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
- Center for Quantum Science and Technology and Department of Physics, National Tsing Hua University, Hsinchu, 30013, Taiwan
- Department of Physics, University of Tokyo, Bunkyo-Ku, Tokyo, 113-0033, Japan
| | - Di-Jing Huang
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
- Department of Physics, National Tsing Hua University, Hsinchu, 30013, Taiwan
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu, 30093, Taiwan
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2
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Fernández-Catalá J, Kistanov AA, Bai Y, Singh H, Cao W. Theoretical prediction and shape-controlled synthesis of two-dimensional semiconductive Ni 3TeO 6. NPJ 2D MATERIALS AND APPLICATIONS 2023; 7:48. [PMID: 38665483 PMCID: PMC11041737 DOI: 10.1038/s41699-023-00412-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 06/28/2023] [Indexed: 04/28/2024]
Abstract
Current progress in two-dimensional (2D) materials explorations leads to constant specie enrichments of possible advanced materials down to two dimensions. The metal chalcogenide-based 2D materials are promising grounds where many adjacent territories are waiting to be explored. Here, a stable monolayer Ni3TeO6 (NTO) structure was computationally predicted and its stacked 2D nanosheets experimentally synthesized. Theoretical design undergoes featuring coordination of metalloid chalcogen, slicing the bulk structure, geometrical optimizations and stability study. The predicted layered NTO structure is realized in nanometer-thick nanosheets via a one-pot shape-controlled hydrothermal synthesis. Compared to the bulk, the 2D NTO own a lowered bandgap energy, more sensitive wavelength selectivity and an emerging photocatalytic hydrogen evolution ability under visible light. Beside a new 2D NTO with the optoelectrical and photocatalytic merits, its existing polar space group, structural specification, and design route are hoped to benefit 2D semiconductor innovations both in species enrichment and future applications.
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Affiliation(s)
| | - Andrey A. Kistanov
- Nano and Molecular Systems Research Unit, University of Oulu, Oulu, FIN-90014 Finland
| | - Yang Bai
- Microelectronics Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, FI-90570 Oulu, Finland
| | - Harishchandra Singh
- Nano and Molecular Systems Research Unit, University of Oulu, Oulu, FIN-90014 Finland
| | - Wei Cao
- Nano and Molecular Systems Research Unit, University of Oulu, Oulu, FIN-90014 Finland
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3
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Fernández-Catalá J, Singh H, Wang S, Huhtinen H, Paturi P, Bai Y, Cao W. Hydrothermal Synthesis of Ni 3TeO 6 and Cu 3TeO 6 Nanostructures for Magnetic and Photoconductivity Applications. ACS APPLIED NANO MATERIALS 2023; 6:4887-4897. [PMID: 37006912 PMCID: PMC10043876 DOI: 10.1021/acsanm.3c00630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 02/27/2023] [Indexed: 06/19/2023]
Abstract
Despite great attention toward transition metal tellurates especially M3TeO6 (M = transition metal) in magnetoelectric applications, control on single phasic morphology-oriented growth of these tellurates at the nanoscale is still missing. Herein, a hydrothermal synthesis is performed to synthesize single-phased nanocrystals of two metal tellurates, i.e., Ni3TeO6 (NTO with average particle size ∼37 nm) and Cu3TeO6 (CTO ∼ 140 nm), using NaOH as an additive. This method favors the synthesis of pure NTO and CTO nanoparticles without the incorporation of Na at pH = 7 in MTO crystal structures such as Na2M2TeO6, as it happens in conventional synthesis approaches such as solid-state reaction and/or coprecipitation. Systematic characterization techniques utilizing in-house and synchrotron-based characterization methods for the morphological, structural, electronic, magnetic, and photoconductivity properties of nanomaterials showed the absence of Na in individual particulate single-phase MTO nanocrystals. Prepared MTO nanocrystals also exhibit slightly higher antiferromagnetic interactions (e.g., T N-NTO = 57 K and T N-CTO = 68 K) compared to previously reported MTO single crystals. Interestingly, NTO and CTO show not only a semiconducting nature but also photoconductivity. The proposed design scheme opens the door to any metal tellurates for controllable synthesis toward different applications. Moreover, the photoconductivity results of MTO nanomaterials prepared serve as a preliminary proof of concept for potential application as photodetectors.
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Affiliation(s)
- Javier Fernández-Catalá
- Nano
and Molecular Systems Research Unit, University
of Oulu, Oulu FIN-90014, Finland
- Materials
Institute and Inorganic Chemistry Department, University of Alicante, Ap. 99, E-03080 Alicante, Spain
| | - Harishchandra Singh
- Nano
and Molecular Systems Research Unit, University
of Oulu, Oulu FIN-90014, Finland
| | - Shubo Wang
- Nano
and Molecular Systems Research Unit, University
of Oulu, Oulu FIN-90014, Finland
| | - Hannu Huhtinen
- Wihuri
Physical Laboratory, Department of Physics and Astronomy University of Turku, Turku FIN-20014, Finland
| | - Petriina Paturi
- Wihuri
Physical Laboratory, Department of Physics and Astronomy University of Turku, Turku FIN-20014, Finland
| | - Yang Bai
- Microelectronics
Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, FI-90570 Oulu, Finland
| | - Wei Cao
- Nano
and Molecular Systems Research Unit, University
of Oulu, Oulu FIN-90014, Finland
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4
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Cao Y, Tang YL, Zhu YL, Wang Y, Liu N, Zou MJ, Feng YP, Geng WR, Li C, Li D, Li Y, Wu B, Liu J, Gong F, Zhang Z, Ma XL. Polar Magnetism Above 600 K with High Adaptability in Perovskite Oxides. ACS APPLIED MATERIALS & INTERFACES 2022; 14:48052-48060. [PMID: 36226575 DOI: 10.1021/acsami.2c15286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
High magnetic order temperature, sustainable polar insulating state, and tolerance to device integrations are substantial advantages for applications in next-generation spintronics. However, engineering such functionality in a single-phase system remains a challenge owing to the contradicted chemical and electronic requirements for polar nature and magnetism, especially with an ordering state highly above room temperature. Perovskite-related oxides with unique flexibility allow electron-unpaired subsystems to merge into the polar lattice to induce magnetic interactions, combined with their inherent asymmetry, thereby promising polar magnet design. Herein, by atomic-level composition assembly, a family of Ti/Fe co-occupied perovskite oxide films Pb(Ti1-x,Fex)O3 (PFT(x)) with a Ruddlesden-Popper superstructure are successfully synthesized on several different substrates, demonstrating exceptional adaptability to different integration conditions. Furthermore, second-harmonic generation measurements convince the symmetry-breaking polar character. Notably, a ferromagnetic ground state up to 600 K and a steady insulating state far beyond room temperature were achieved simultaneously in these films. This strategy of constructing layered modular superlattices in perovskite oxides could be extended to other strongly correlated systems for triggering nontrivial quantum physical phenomena.
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Affiliation(s)
- Yi Cao
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Wenhua Road 72, 110016 Shenyang, China
- School of Materials Science and Engineering, University of Science and Technology of China, Wenhua Road 72, 110016 Shenyang, China
| | - Yun-Long Tang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Wenhua Road 72, 110016 Shenyang, China
| | - Yin-Lian Zhu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Wenhua Road 72, 110016 Shenyang, China
- Bay Area Center for Electron Microscopy, Songshan Lake Materials Laboratory, Dongguan 523808, Guangdong, China
| | - Yujia Wang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Wenhua Road 72, 110016 Shenyang, China
| | - Nan Liu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Wenhua Road 72, 110016 Shenyang, China
- School of Materials Science and Engineering, University of Science and Technology of China, Wenhua Road 72, 110016 Shenyang, China
| | - Min-Jie Zou
- Bay Area Center for Electron Microscopy, Songshan Lake Materials Laboratory, Dongguan 523808, Guangdong, China
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Yan-Peng Feng
- Bay Area Center for Electron Microscopy, Songshan Lake Materials Laboratory, Dongguan 523808, Guangdong, China
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Wan-Rong Geng
- Bay Area Center for Electron Microscopy, Songshan Lake Materials Laboratory, Dongguan 523808, Guangdong, China
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Changji Li
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Wenhua Road 72, 110016 Shenyang, China
| | - Da Li
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Wenhua Road 72, 110016 Shenyang, China
| | - Yong Li
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Wenhua Road 72, 110016 Shenyang, China
- School of Materials Science and Engineering, University of Science and Technology of China, Wenhua Road 72, 110016 Shenyang, China
| | - Bo Wu
- Bay Area Center for Electron Microscopy, Songshan Lake Materials Laboratory, Dongguan 523808, Guangdong, China
| | - Jiaqi Liu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Wenhua Road 72, 110016 Shenyang, China
- School of Materials Science and Engineering, University of Science and Technology of China, Wenhua Road 72, 110016 Shenyang, China
| | - Fenghui Gong
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Wenhua Road 72, 110016 Shenyang, China
- School of Materials Science and Engineering, University of Science and Technology of China, Wenhua Road 72, 110016 Shenyang, China
| | - Zhidong Zhang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Wenhua Road 72, 110016 Shenyang, China
| | - Xiu-Liang Ma
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Wenhua Road 72, 110016 Shenyang, China
- Bay Area Center for Electron Microscopy, Songshan Lake Materials Laboratory, Dongguan 523808, Guangdong, China
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
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5
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Ji K, Solana‐Madruga E, Patino MA, Shimakawa Y, Attfield JP. A New Cation‐Ordered Structure Type with Multiple Thermal Redistributions in Co
2
InSbO
6. Angew Chem Int Ed Engl 2022; 61:e202203062. [PMID: 35358356 PMCID: PMC9321074 DOI: 10.1002/anie.202203062] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Indexed: 11/11/2022]
Abstract
Cation ordering in solids is important for controlling physical properties and leads to ilmenite (FeTiO3) and LiNbO3 type derivatives of the corundum structure, with ferroelectricity resulting from breaking of inversion symmetry in the latter. However, a hypothetical third ABO3 derivative with R32 symmetry has never been observed. Here we show that Co2InSbO6 recovered from high pressure has a new, ordered‐R32 A2BCO6 variant of the corundum structure. Co2InSbO6 is also remarkable for showing two cation redistributions, to (Co0.5In0.5)2CoSbO6 and then Co2InSbO6 variants of the ordered‐LiNbO3 A2BCO6 structure on heating. The cation distributions change magnetic properties as the final ordered‐LiNbO3 product has a sharp ferrimagnetic transition unlike the initial ordered‐R32 phase. Future syntheses of metastable corundum derivatives at pressure are likely to reveal other cation‐redistribution pathways, and may enable ABO3 materials with the R32 structure to be discovered.
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Affiliation(s)
- Kunlang Ji
- Centre for Science at Extreme Conditions (CSEC) School of Chemistry University of Edinburgh Mayfield Road Edinburgh EH9 3FD UK
| | - Elena Solana‐Madruga
- Centre for Science at Extreme Conditions (CSEC) School of Chemistry University of Edinburgh Mayfield Road Edinburgh EH9 3FD UK
- Dpto. Q. Inorgánica Universidad Complutense de Madrid Avda. Complutense sn 28040 Madrid Spain
| | | | - Yuichi Shimakawa
- Institute for Chemical Research Kyoto University Uji Kyoto 611-0011 Japan
| | - J. Paul Attfield
- Centre for Science at Extreme Conditions (CSEC) School of Chemistry University of Edinburgh Mayfield Road Edinburgh EH9 3FD UK
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6
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Topologically protected magnetoelectric switching in a multiferroic. Nature 2022; 607:81-85. [PMID: 35794266 DOI: 10.1038/s41586-022-04851-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 05/11/2022] [Indexed: 11/08/2022]
Abstract
Electric control of magnetism and magnetic control of ferroelectricity can improve the energy efficiency of magnetic memory and data-processing devices1. However, the necessary magnetoelectric switching is hard to achieve, and requires more than just a coupling between the spin and the charge degrees of freedom2-5. Here we show that an application and subsequent removal of a magnetic field reverses the electric polarization of the multiferroic GdMn2O5, thus requiring two cycles to bring the system back to the original configuration. During this unusual hysteresis loop, four states with different magnetic configurations are visited by the system, with one half of all spins undergoing unidirectional full-circle rotation in increments of about 90 degrees. Therefore, GdMn2O5 acts as a magnetic crankshaft that converts the back-and-forth variations of the magnetic field into a circular spin motion. This peculiar four-state magnetoelectric switching emerges as a topologically protected boundary between different two-state switching regimes. Our findings establish a paradigm of topologically protected switching phenomena in ferroic materials.
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7
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Zhou H, Ding H, Yu Z, Yu T, Zhai K, Wang B, Mu C, Wen F, Xiang J, Xue T, Wang L, Liu Z, Sun Y, Tian Y. Pressure Control of the Structure and Multiferroicity in a Hydrogen-Bonded Metal-Organic Framework. Inorg Chem 2022; 61:9631-9637. [PMID: 35696435 DOI: 10.1021/acs.inorgchem.2c01083] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Multiferroic materials with the cross-coupling of magnetic and ferroelectric orders provide a new platform for physics study and designing novel electronic devices. However, the weak coupling strength of ferroelectricity and magnetism is the main obstacle for potential applications. The recent research focuses on enhancing the coupling effect via synthesizing novel materials in a chemical route or tuning the multiferroicity in the physical way. Among them, pressure is an effective method to modify multiferroic materials, especially when the chemical doping has reached its tuning limit. In this work, we systemically studied the multiferroic properties in a hydrogen-bonded metal-organic framework (MOF) [(CH3)2NH2]Ni(HCOO)3 under high pressure. X-ray diffraction and Raman scattering reveal that a structural phase transition occurs in a pressure region of 6-9 GPa, and the crystal structure is greatly modified by pressure. With the ac magnetic susceptibility, pyroelectric current, and dielectric constant measurements, we obtain the multiferroic property evolution under high pressure and create a temperature-pressure phase diagram. Our study demonstrates that the pressure can modify the magnetic superexchange interaction and hydrogen bonding simultaneously in these perovskite-like MOFs. The multiferroic phase region has been expanded to higher temperature due to the pressure-enhanced spin-phonon coupling effect.
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Affiliation(s)
- Houjian Zhou
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Hao Ding
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Zhipeng Yu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Tongtong Yu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Kun Zhai
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Bochong Wang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Congpu Mu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Fusheng Wen
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Jianyong Xiang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Tianyu Xue
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Lin Wang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Zhongyuan Liu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | - Young Sun
- Center of Quantum Materials and Devices, Chongqing University, Chongqing 401331, China
| | - Yongjun Tian
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
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8
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Attfield JP, Ji K, Solana-Madruga E, Patino MA, Shimakawa Y. A New Cation‐Ordered Structure Type with Multiple Thermal Redistributions in Co2InSbO6. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- John Paul Attfield
- University of Edinburgh Centre for Science at Extreme Conditions Mayfield Road EH9 3JZ Edinburgh UNITED KINGDOM
| | - Kunlang Ji
- University of Edinburgh Darwin Library: The University of Edinburgh school of chemistry UNITED KINGDOM
| | - Elena Solana-Madruga
- University of Edinburgh Darwin Library: The University of Edinburgh school of chemistry UNITED KINGDOM
| | - Midori Amano Patino
- Kyoto University - Uji Campus: Kyoto Daigaku - Uji Campus ICR UNITED KINGDOM
| | - Yuichi Shimakawa
- Kyoto University - Uji Campus: Kyoto Daigaku - Uji Campus ICR UNITED KINGDOM
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9
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Topological spin/structure couplings in layered chiral magnet Cr 1/3TaS 2: The discovery of spiral magnetic superstructure. Proc Natl Acad Sci U S A 2021; 118:2023337118. [PMID: 34593631 DOI: 10.1073/pnas.2023337118] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/30/2021] [Indexed: 11/18/2022] Open
Abstract
Chiral magnets have recently emerged as hosts for topological spin textures and related transport phenomena, which can find use in next-generation spintronic devices. The coupling between structural chirality and noncollinear magnetism is crucial for the stabilization of complex spin structures such as magnetic skyrmions. Most studies have been focused on the physical properties in homochiral states favored by crystal growth and the absence of long-ranged interactions between domains of opposite chirality. Therefore, effects of the high density of chiral domains and domain boundaries on magnetic states have been rarely explored so far. Herein, we report layered heterochiral Cr1/3TaS2, exhibiting numerous chiral domains forming topological defects and a nanometer-scale helimagnetic order interlocked with the structural chirality. Tuning the chiral domain density, we discovered a macroscopic topological magnetic texture inside each chiral domain that has an appearance of a spiral magnetic superstructure composed of quasiperiodic Néel domain walls. The spirality of this object can have either sign and is decoupled from the structural chirality. In weak, in-plane magnetic fields, it transforms into a nonspiral array of concentric ring domains. Numerical simulations suggest that this magnetic superstructure is stabilized by strains in the heterochiral state favoring noncollinear spins. Our results unveil topological structure/spin couplings in a wide range of different length scales and highly tunable spin textures in heterochiral magnets.
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10
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Wang ZC, Thanabalasingam K, Scheifers JP, Streeter A, McCandless GT, Gaudet J, Brown CM, Segre CU, Chan JY, Tafti F. Antiferromagnetic Order and Spin-Canting Transition in the Corrugated Square Net Compound Cu 3(TeO 4)(SO 4)·H 2O. Inorg Chem 2021; 60:10565-10571. [PMID: 34176270 PMCID: PMC10629843 DOI: 10.1021/acs.inorgchem.1c01220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Strongly correlated electrons in layered perovskite structures have been the birthplace of high-temperature superconductivity, spin liquids, and quantum criticality. Specifically, the cuprate materials with layered structures made of corner-sharing square-planar CuO4 units have been intensely studied due to their Mott insulating ground state, which leads to high-temperature superconductivity upon doping. Identifying new compounds with similar lattice and electronic structures has become a challenge in solid-state chemistry. Here, we report the hydrothermal crystal growth of a new copper tellurite sulfate, Cu3(TeO4)(SO4)·H2O, a promising alternative to layered perovskites. The orthorhombic phase (space group Pnma) is made of corrugated layers of corner-sharing CuO4 square-planar units that are edge-shared with TeO4 units. The layers are linked by slabs of corner-sharing CuO4 and SO4. Using both the bond valence sum analysis and magnetization data, we find purely Cu2+ ions within the layers but a mixed valence of Cu2+/Cu+ between the layers. Cu3(TeO4)(SO4)·H2O undergoes an antiferromagnetic transition at TN = 67 K marked by a peak in the magnetic susceptibility. Upon further cooling, a spin-canting transition occurs at T* = 12 K, evidenced by a kink in the heat capacity. The spin-canting transition is explained on the basis of a J1-J2 model of magnetic interactions, which is consistent with the slightly different in-plane superexchange paths. We present Cu3(TeO4)(SO4)·H2O as a promising platform for the future doping and strain experiments that could tune the Mott insulating ground state into superconducting or spin liquid states.
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Affiliation(s)
- Zhi-Cheng Wang
- Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Kulatheepan Thanabalasingam
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Jan P Scheifers
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Alenna Streeter
- Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Gregory T McCandless
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Jonathan Gaudet
- Department of Materials Science and Engineering, Maryland University, College Park, Maryland 20942-2115, United States
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102, United States
| | - Craig M Brown
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102, United States
| | - Carlo U Segre
- Department of Physics & CSRRI, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - Julia Y Chan
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Fazel Tafti
- Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467, United States
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11
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Han Y, Wu M, Gui C, Zhu C, Sun Z, Zhao MH, Savina AA, Abakumov AM, Wang B, Huang F, He L, Chen J, Huang Q, Croft M, Ehrlich S, Khalid S, Deng Z, Jin C, Grams CP, Hemberger J, Wang X, Hong J, Adem U, Ye M, Dong S, Li MR. Data-driven computational prediction and experimental realization of exotic perovskite-related polar magnets. NPJ QUANTUM INFORMATION 2020; 5:10.1038/s41535-020-00294-2. [PMID: 38868452 PMCID: PMC11167729 DOI: 10.1038/s41535-020-00294-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Accepted: 11/12/2020] [Indexed: 06/14/2024]
Abstract
Rational design of technologically important exotic perovskites is hampered by the insufficient geometrical descriptors and costly and extremely high-pressure synthesis, while the big-data driven compositional identification and precise prediction entangles full understanding of the possible polymorphs and complicated multidimensional calculations of the chemical and thermodynamic parameter space. Here we present a rapid systematic data-mining-driven approach to design exotic perovskites in a high-throughput and discovery speed of the A 2 BB'O6 family as exemplified in A 3TeO6. The magnetoelectric polar magnet Co3TeO6, which is theoretically recognized and experimentally realized at 5 GPa from the six possible polymorphs, undergoes two magnetic transitions at 24 and 58 K and exhibits helical spin structure accompanied by magnetoelastic and magnetoelectric coupling. We expect the applied approach will accelerate the systematic and rapid discovery of new exotic perovskites in a high-throughput manner and can be extended to arbitrary applications in other families.
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Affiliation(s)
- Yifeng Han
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, 510275 Guangzhou, China
- These authors contributed equally: Yifeng Han, Meixia Wu
| | - Meixia Wu
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, 510275 Guangzhou, China
- These authors contributed equally: Yifeng Han, Meixia Wu
| | - Churen Gui
- School of Physics, Southeast University, 211189 Nanjing, China
| | - Chuanhui Zhu
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, 510275 Guangzhou, China
| | - Zhongxiong Sun
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, 510275 Guangzhou, China
| | - Mei-Huan Zhao
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, 510275 Guangzhou, China
| | - Aleksandra A Savina
- Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, bld. 1, Moscow 121205, Russia
| | - Artem M Abakumov
- Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, bld. 1, Moscow 121205, Russia
| | - Biao Wang
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials, Sun Yat-Sen University, 510275 Guangzhou, China
| | - Feng Huang
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials, Sun Yat-Sen University, 510275 Guangzhou, China
| | - LunHua He
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, 100190 Beijing, China
- Songshan Lake Materials Laboratory, 523808 Dongguan, Guangdong, China
- Institute of High Energy Physics, Chinese Academy of Sciences, 100049 Beijing, China
| | - Jie Chen
- Institute of High Energy Physics, Chinese Academy of Sciences, 100049 Beijing, China
- Spallation Neutron Source Science Center, 523803 Dongguan, China
| | - Qingzhen Huang
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899-6102, USA
| | - Mark Croft
- Department of Physics, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | | | - Syed Khalid
- NSLS-II, Brookhaven National Laboratory, Upton, NY, USA
| | - Zheng Deng
- Institute of Physics, School of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, P. O. Box 603, 100190 Beijing, China
| | - Changqing Jin
- Institute of Physics, School of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, P. O. Box 603, 100190 Beijing, China
| | - Christoph P Grams
- II Physikalisches Institut, Universität zu Köln, 50937 Köln, Germany
| | - Joachim Hemberger
- II Physikalisches Institut, Universität zu Köln, 50937 Köln, Germany
| | - Xueyun Wang
- School of Aerospace Engineering, Beijing Institute of Technology, 100081 Beijing, China
| | - Jiawang Hong
- School of Aerospace Engineering, Beijing Institute of Technology, 100081 Beijing, China
| | - Umut Adem
- Department of Materials Science and Engineering, İzmir Institute of Technology, Urla, 35430 İzmir, Turkey
| | - Meng Ye
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, 100084 Beijing, China
| | - Shuai Dong
- School of Physics, Southeast University, 211189 Nanjing, China
| | - Man-Rong Li
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, 510275 Guangzhou, China
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12
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Lu C, Wu M, Lin L, Liu JM. Single-phase multiferroics: new materials, phenomena, and physics. Natl Sci Rev 2019; 6:653-668. [PMID: 34691921 PMCID: PMC8291614 DOI: 10.1093/nsr/nwz091] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 06/15/2019] [Accepted: 06/20/2019] [Indexed: 12/23/2022] Open
Abstract
Multiferroics, where multiple ferroic orders coexist and are intimately coupled, promise novel applications in conceptually new devices on one hand, and on the other hand provide fascinating physics that is distinctly different from the physics of high-TC superconductors and colossal magnetoresistance manganites. In this mini-review, we highlight the recent progress of single-phase multiferroics in the exploration of new materials, efficient roadmaps for functionality enhancement, new phenomena beyond magnetoelectric coupling, and underlying novel physics. In the meantime, a slightly more detailed description is given of several multiferroics with ferrimagnetic orders and double-layered perovskite structure and also of recently emerging 2D multiferroics. Some emergent phenomena such as topological vortex domain structure, non-reciprocal response, and hybrid mechanisms for multiferroicity engineering and magnetoelectric coupling in various types of multiferroics will be briefly reviewed.
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Affiliation(s)
- Chengliang Lu
- School of Physics & Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Menghao Wu
- School of Physics & Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Lin Lin
- Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
| | - Jun-Ming Liu
- Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
- Institute for Advanced Materials, Hubei Normal University, Huangshi 435002, China
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13
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Ji KL, Solana-Madruga E, Arevalo-Lopez AM, Manuel P, Ritter C, Senyshyn A, Attfield JP. Lock-in spin structures and ferrimagnetism in polar Ni 2-xCo xScSbO 6 oxides. Chem Commun (Camb) 2018; 54:12523-12526. [PMID: 30345452 DOI: 10.1039/c8cc07556e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The new phase Co2ScSbO6 and Ni2-xCoxScSbO6 solid solutions adopt the polar Ni3TeO6-type structure and order magnetically below 60 K. A series of long-period lock-in [0 0 1/3n] spin structures with n = 5, 6, 8 and 10 is discovered, coexisting with a ferrimagnetic [0 0 0] phase at high Co-contents. The presence of electrical polarisation and spontaneous magnetisations offers possibilities for multiferroic properties.
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Affiliation(s)
- Kun-Lang Ji
- Centre for Science at Extreme Conditions and School of Chemistry, University of Edinburgh, UK.
| | - Elena Solana-Madruga
- Centre for Science at Extreme Conditions and School of Chemistry, University of Edinburgh, UK.
| | - Angel M Arevalo-Lopez
- Université Lille, CNRS, Centrale Lille, ENSCL, Université Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Pascal Manuel
- ISIS Neutron Pulsed Facility, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Oxford OX11 0QX, UK
| | | | - Anatoliy Senyshyn
- Forschungsneutronenquelle Heinz Maier-Leibnitz FRM II, Technische Universität München, D-85747 Garching, Germany
| | - J Paul Attfield
- Centre for Science at Extreme Conditions and School of Chemistry, University of Edinburgh, UK.
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14
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Ghara S, Fauth F, Suard E, Rodriquez-Carvajal J, Sundaresan A. Synthesis, Structure, and Physical Properties of the Polar Magnet DyCrWO 6. Inorg Chem 2018; 57:12827-12835. [PMID: 30256100 DOI: 10.1021/acs.inorgchem.8b02023] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
It has recently been reported that the ordered aeschynite-type polar ( Pna21) magnets RFeWO6 (R = Eu, Tb, Dy, Y) exhibit type II multiferroic properties below TN ∼ 15-18 K. Herein, we report a comprehensive investigation of the isostructural oxide DyCrWO6 and compare the results with those of DyFeWO6. The cation-ordered oxide DyCrWO6 crystallizes in the same polar orthorhombic structure and undergoes antiferromagnetic ordering at TN = 25 K. Contrary to DyFeWO6, only a very weak dielectric anomaly and magnetodielectric effects are observed at the Néel temperature and, more importantly, there is no induced polarization at TN. Furthermore, analysis of the low-temperature neutron diffraction data reveals a collinear arrangement of Cr spins but a noncollinear Dy-spin configuration due to single-ion anisotropy. We suggest that the collinear arrangement of Cr spins may be responsible for the absence of electric polarization in DyCrWO6. A temperature-induced magnetization reversal and magnetocaloric effects are observed at low temperatures.
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Affiliation(s)
- Somnath Ghara
- Chemistry and Physics of Materials Unit and School of Advanced Materials , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur P.O , 560 064 Bangalore , India
| | - Francois Fauth
- Institut Laue Langevin (ILL) , 71 Avenue des Martyrs , CS 20156, 38042 Grenoble Cedex 9 , France
| | - Emmanuelle Suard
- Construction, Equipping and Exploitation of the Synchrotron Light Source (CELLS) , ALBA Synchrotron , BP 1413, 08290 Cerdanyola del Vallès, Barcelona , Spain
| | - Juan Rodriquez-Carvajal
- Construction, Equipping and Exploitation of the Synchrotron Light Source (CELLS) , ALBA Synchrotron , BP 1413, 08290 Cerdanyola del Vallès, Barcelona , Spain
| | - A Sundaresan
- Chemistry and Physics of Materials Unit and School of Advanced Materials , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur P.O , 560 064 Bangalore , India
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15
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Kuzmenko AM, Szaller D, Kain T, Dziom V, Weymann L, Shuvaev A, Pimenov A, Mukhin AA, Ivanov VY, Gudim IA, Bezmaternykh LN, Pimenov A. Switching of Magnons by Electric and Magnetic Fields in Multiferroic Borates. PHYSICAL REVIEW LETTERS 2018; 120:027203. [PMID: 29376713 DOI: 10.1103/physrevlett.120.027203] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Indexed: 06/07/2023]
Abstract
Electric manipulation of magnetic properties is a key problem of materials research. To fulfill the requirements of modern electronics, these processes must be shifted to high frequencies. In multiferroic materials, this may be achieved by electric and magnetic control of their fundamental excitations. Here we identify magnetic vibrations in multiferroic iron borates that are simultaneously sensitive to external electric and magnetic fields. Nearly 100% modulation of the terahertz radiation in an external field is demonstrated for SmFe_{3}(BO_{3})_{4}. High sensitivity can be explained by a modification of the spin orientation that controls the excitation conditions in multiferroic borates. These experiments demonstrate the possibility to alter terahertz magnetic properties of materials independently by external electric and magnetic fields.
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Affiliation(s)
- A M Kuzmenko
- Prokhorov General Physics Institute, Russian Academy of Sciences, 119991 Moscow, Russia
| | - D Szaller
- Institute of Solid State Physics, Vienna University of Technology, 1040 Vienna, Austria
| | - Th Kain
- Institute of Solid State Physics, Vienna University of Technology, 1040 Vienna, Austria
| | - V Dziom
- Institute of Solid State Physics, Vienna University of Technology, 1040 Vienna, Austria
| | - L Weymann
- Institute of Solid State Physics, Vienna University of Technology, 1040 Vienna, Austria
| | - A Shuvaev
- Institute of Solid State Physics, Vienna University of Technology, 1040 Vienna, Austria
| | - Anna Pimenov
- Institute of Solid State Physics, Vienna University of Technology, 1040 Vienna, Austria
| | - A A Mukhin
- Prokhorov General Physics Institute, Russian Academy of Sciences, 119991 Moscow, Russia
| | - V Yu Ivanov
- Prokhorov General Physics Institute, Russian Academy of Sciences, 119991 Moscow, Russia
| | - I A Gudim
- L. V. Kirensky Institute of Physics Siberian Branch of RAS, 660036 Krasnoyarsk, Russia
| | - L N Bezmaternykh
- L. V. Kirensky Institute of Physics Siberian Branch of RAS, 660036 Krasnoyarsk, Russia
| | - A Pimenov
- Institute of Solid State Physics, Vienna University of Technology, 1040 Vienna, Austria
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16
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Magnetostriction-polarization coupling in multiferroic Mn 2MnWO 6. Nat Commun 2017; 8:2037. [PMID: 29229914 PMCID: PMC5725588 DOI: 10.1038/s41467-017-02003-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 10/31/2017] [Indexed: 11/08/2022] Open
Abstract
Double corundum-related polar magnets are promising materials for multiferroic and magnetoelectric applications in spintronics. However, their design and synthesis is a challenge, and magnetoelectric coupling has only been observed in Ni3TeO6 among the known double corundum compounds to date. Here we address the high-pressure synthesis of a new polar and antiferromagnetic corundum derivative Mn2MnWO6, which adopts the Ni3TeO6-type structure with low temperature first-order field-induced metamagnetic phase transitions (T N = 58 K) and high spontaneous polarization (~ 63.3 μC·cm-2). The magnetostriction-polarization coupling in Mn2MnWO6 is evidenced by second harmonic generation effect, and corroborated by magnetic-field-dependent pyroresponse behavior, which together with the magnetic-field-dependent polarization and dielectric measurements, qualitatively indicate magnetoelectric coupling. Piezoresponse force microscopy imaging and spectroscopy studies on Mn2MnWO6 show switchable polarization, which motivates further exploration on magnetoelectric effect in single crystal/thin film specimens.
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17
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Giant magnetoelectric effects achieved by tuning spin cone symmetry in Y-type hexaferrites. Nat Commun 2017; 8:519. [PMID: 28900107 PMCID: PMC5595903 DOI: 10.1038/s41467-017-00637-x] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 07/12/2017] [Indexed: 11/11/2022] Open
Abstract
Multiferroics materials, which exhibit coupled magnetic and ferroelectric properties, have attracted tremendous research interest because of their potential in constructing next-generation multifunctional devices. The application of single-phase multiferroics is currently limited by their usually small magnetoelectric effects. Here, we report the realization of giant magnetoelectric effects in a Y-type hexaferrite Ba0.4Sr1.6Mg2Fe12O22 single crystal, which exhibits record-breaking direct and converse magnetoelectric coefficients and a large electric-field-reversed magnetization. We have uncovered the origin of the giant magnetoelectric effects by a systematic study in the Ba2-xSrxMg2Fe12O22 family with magnetization, ferroelectricity and neutron diffraction measurements. With the transverse spin cone symmetry restricted to be two-fold, the one-step sharp magnetization reversal is realized and giant magnetoelectric coefficients are achieved. Our study reveals that tuning magnetic symmetry is an effective route to enhance the magnetoelectric effects also in multiferroic hexaferrites. Control of the electrical properties of materials by means of magnetic fields or vice versa may facilitate next-generation spintronic devices, but is still limited by their intrinsically weak magnetoelectric effect. Here, the authors report the existence of an enhanced magnetoelectric effect in a Y-type hexaferrite, and reveal its underlining mechanism.
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18
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Lee CH, Wang CW, Zhao Y, Li WH, Lynn JW, Harris AB, Rule K, Yang HD, Berger H. Complex magnetic incommensurability and electronic charge transfer through the ferroelectric transition in multiferroic Co 3TeO 6. Sci Rep 2017; 7:6437. [PMID: 28743893 PMCID: PMC5527072 DOI: 10.1038/s41598-017-06651-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 06/14/2017] [Indexed: 11/09/2022] Open
Abstract
Polarized and unpolarized neutron diffractions have been carried out to investigate the nature of the magnetic structures and transitions in monoclinic Co3TeO6. As the temperature is lowered below 26 K long range order develops, which is fully incommensurate (ICM) in all three crystallographic directions. Below 19.5 K additional commensurate magnetic peaks develop, consistent with the Γ4 irreducible representation, along with a splitting of the ICM peaks along the h direction which indicates that there are two separate sets of magnetic modulation vectors. Below 18 K, this small additional magnetic incommensurability disappears, ferroelectricity develops, an additional commensurate magnetic structure consistent with Γ3 irreducible representation appears, and the k component of the ICM wave vector disappears. Synchrotron x-ray diffraction measurements demonstrate that there is a significant shift of the electronic charge distribution from the Te ions at the crystallographic 8 f sites to the neighboring Co and O ions. These results, together with the unusually small electric polarization, its strong magnetic field dependence, and the negative thermal expansion in all three lattice parameters, suggest this material is an antiferroelectric. Below15 K the k component of the ICM structure reappears, along with second-order ICM Bragg peaks, which polarized neutron data demonstrate are magnetic in origin.
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Affiliation(s)
- Chi-Hung Lee
- Department of Physics, National Central University, Jhongli, 32001, Taiwan
| | - Chin-Wei Wang
- Neutron Group, National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Yang Zhao
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland, 20899, USA.,Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Wen-Hsien Li
- Department of Physics, National Central University, Jhongli, 32001, Taiwan.
| | - Jeffrey W Lynn
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland, 20899, USA
| | - A Brooks Harris
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Kirrily Rule
- Bragg Institute, Australian Nuclear Science and Technology Organisation, Lucas Heights, NSW, 2234, Australia
| | - Hung-Duen Yang
- Department of Physics and Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Helmuth Berger
- Institute of Physics of Complex Matter, EPFL, Lausanne, Switzerland
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19
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Yokosuk MO, Al-Wahish A, Artyukhin S, O'Neal KR, Mazumdar D, Chen P, Yang J, Oh YS, McGill SA, Haule K, Cheong SW, Vanderbilt D, Musfeldt JL. Magnetoelectric Coupling through the Spin Flop Transition in Ni_{3}TeO_{6}. PHYSICAL REVIEW LETTERS 2016; 117:147402. [PMID: 27740819 DOI: 10.1103/physrevlett.117.147402] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Indexed: 06/06/2023]
Abstract
We combined high field optical spectroscopy and first principles calculations to analyze the electronic structure of Ni_{3}TeO_{6} across the 53 K and 9 T magnetic transitions, both of which are accompanied by large changes in electric polarization. The color properties are sensitive to magnetic order due to field-induced changes in the crystal field environment, with those around Ni1 and Ni2 most affected. These findings advance the understanding of magnetoelectric coupling in materials in which magnetic 3d centers coexist with nonmagnetic heavy chalcogenide cations.
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Affiliation(s)
- M O Yokosuk
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Amal Al-Wahish
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Sergey Artyukhin
- Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
- Quantum Materials Theory, Italian Institute of Technology, Via Morego 30, 16163 Genova, Italy
| | - K R O'Neal
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - D Mazumdar
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - P Chen
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Junjie Yang
- Laboratory for Pohang Emergent Materials and Max Plank POSTECH Center for Complex Phase Materials, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Yoon Seok Oh
- Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
- Rutgers Center for Emergent Materials, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Stephen A McGill
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
| | - K Haule
- Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Sang-Wook Cheong
- Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
- Laboratory for Pohang Emergent Materials and Max Plank POSTECH Center for Complex Phase Materials, Pohang University of Science and Technology, Pohang 790-784, Korea
- Rutgers Center for Emergent Materials, Rutgers University, Piscataway, New Jersey 08854, USA
| | - David Vanderbilt
- Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - J L Musfeldt
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
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20
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Zhao L, Fernández-Díaz MT, Tjeng LH, Komarek AC. Oxyhalides: A new class of high-T C multiferroic materials. SCIENCE ADVANCES 2016; 2:e1600353. [PMID: 27386552 PMCID: PMC4928925 DOI: 10.1126/sciadv.1600353] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 04/26/2016] [Indexed: 05/28/2023]
Abstract
Magnetoelectric multiferroics have attracted enormous attention in the past years because of their high potential for applications in electronic devices, which arises from the intrinsic coupling between magnetic and ferroelectric ordering parameters. The initial finding in TbMnO3 has triggered the search for other multiferroics with higher ordering temperatures and strong magnetoelectric coupling for applications. To date, spin-driven multiferroicity is found mainly in oxides, as well as in a few halogenides. We report multiferroic properties for synthetic melanothallite Cu2OCl2, which is the first discovery of multiferroicity in a transition metal oxyhalide. Measurements of pyrocurrent and the dielectric constant in Cu2OCl2 reveal ferroelectricity below the Néel temperature of ~70 K. Thus, melanothallite belongs to a new class of multiferroic materials with an exceptionally high critical temperature. Powder neutron diffraction measurements reveal an incommensurate magnetic structure below T N, and all magnetic reflections can be indexed with a propagation vector [0.827(7), 0, 0], thus discarding the claimed pyrochlore-like "all-in-all-out" spin structure for Cu2OCl2, and indicating that this transition metal oxyhalide is, indeed, a spin-induced multiferroic material.
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Affiliation(s)
- Li Zhao
- Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | | | - Liu Hao Tjeng
- Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Alexander C. Komarek
- Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Straße 40, 01187 Dresden, Germany
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21
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Lu C, Deniz H, Li X, Liu JM, Cheong SW. Continuous Magnetoelectric Control in Multiferroic DyMnO3 Films with Twin-like Domains. Sci Rep 2016; 6:20175. [PMID: 26829899 PMCID: PMC4735850 DOI: 10.1038/srep20175] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 12/23/2015] [Indexed: 11/26/2022] Open
Abstract
The magnetic control of ferroelectric polarization is currently a central topic in the multiferroic researches, owing to the related gigantic magnetoelectric coupling and fascinating physics. Although a bunch of novel magnetoelectric effect have been discovered in multiferroics of magnetic origin, the manipulation of polarization was found to be fundamentally determined by the microscopic origin in a certain multiferroic phase, hindering the development of unusual magnetoelectric control. Here, we report emergent magnetoelectric control in DyMnO3/Nb:SrTiO3 (001) films showing twin-like domain structure. Our results demonstrate interesting magnetically induced partial switch of polarization due to the coexistence of polarizations along both the a-axis and c-axis enabled by the twin-like domain structure in DyMnO3 films, despite the polarization-switch was conventionally believed to be a one-step event in the bulk counterpart. Moreover, a continuous and periodic control of macroscopic polarization by an in-plane rotating magnetic field is evidenced in the thin films. This distinctive magnetic manipulation of polarization is the consequence of the cooperative action of the twin-like domains and the dual magnetic origin of polarization, which promises additional applications using the magnetic control of ferroelectricity.
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Affiliation(s)
- Chengliang Lu
- School of Physics &Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China.,Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle (Saale), Germany
| | - Hakan Deniz
- Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle (Saale), Germany
| | - Xiang Li
- Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Jun-Ming Liu
- Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Sang-Wook Cheong
- Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey, 08854, USA.,Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
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22
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Song G, Zhang W. Comparative studies on the room-temperature ferrielectric and ferrimagnetic Ni3TeO6-type A2FeMoO6 compounds (A = Sc, Lu). Sci Rep 2016; 6:20133. [PMID: 26831406 PMCID: PMC4735590 DOI: 10.1038/srep20133] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 12/30/2015] [Indexed: 11/28/2022] Open
Abstract
First-principles calculations have been carried out to study the structural, electric, and magnetic properties of Ni3TeO6-type A2FeMoO6 compounds (A = Sc, Lu). Their electric and magnetic properties behave like room-temperature ferrielectric and ferrimagnetic insulators where polarization comes from the un-cancelled antiparallel dipoles of (A(1), Fe3+) and (A(2), Mo3+) ion groups, and magnetization from un-cancelled antiparallel moments of Fe3+ and Mo3+ ions. The net polarization increases with A’s ionic radius and is 7.1 and 8.7 μCcm−2 for Sc2FeMoO6 and Lu2FeMoO6, respectively. The net magnetic moment is 2 μB per formula unit. The magnetic transition temperature is estimated well above room-temperature due to the strong antiferromagnetic superexchange coupling among Fe3+ and Mo3+ spins. The estimated paraelectric to ferrielectric transition temperature is also well above room-temperature. Moreover, strong magnetoelectric coupling is also anticipated because the magnetic ions are involved both in polarization and magnetization. The fully relaxed Ni3TeO6-type A2FeMoO6 structures are free from soft-phonon modes and correspond to stable structures. As a result, Ni3TeO6-type A2FeMoO6 compounds are possible candidates for room-temperature multiferroics with large magnetization and polarization.
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Affiliation(s)
- Guang Song
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China
| | - Weiyi Zhang
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China.,Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
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23
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Gómez-Aguirre LC, Pato-Doldán B, Mira J, Castro-García S, Señarís-Rodríguez MA, Sánchez-Andújar M, Singleton J, Zapf VS. Magnetic Ordering-Induced Multiferroic Behavior in [CH3NH3][Co(HCOO)3] Metal–Organic Framework. J Am Chem Soc 2016; 138:1122-5. [DOI: 10.1021/jacs.5b11688] [Citation(s) in RCA: 153] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- L. Claudia Gómez-Aguirre
- Department
of Fundamental Chemistry, Faculty of Sciences, University of A Coruña, 15071 A Coruña, Spain
| | - Breogán Pato-Doldán
- Department
of Fundamental Chemistry, Faculty of Sciences, University of A Coruña, 15071 A Coruña, Spain
| | - J. Mira
- Department
of Applied Physics, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Socorro Castro-García
- Department
of Fundamental Chemistry, Faculty of Sciences, University of A Coruña, 15071 A Coruña, Spain
| | | | - Manuel Sánchez-Andújar
- Department
of Fundamental Chemistry, Faculty of Sciences, University of A Coruña, 15071 A Coruña, Spain
| | - John Singleton
- National
High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Vivien S. Zapf
- National
High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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24
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Kim JW, Artyukhin S, Mun ED, Jaime M, Harrison N, Hansen A, Yang JJ, Oh YS, Vanderbilt D, Zapf VS, Cheong SW. Successive Magnetic-Field-Induced Transitions and Colossal Magnetoelectric Effect in Ni_{3}TeO_{6}. PHYSICAL REVIEW LETTERS 2015; 115:137201. [PMID: 26451580 DOI: 10.1103/physrevlett.115.137201] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Indexed: 06/05/2023]
Abstract
We report the discovery of a metamagnetic phase transition in a polar antiferromagnet Ni_{3}TeO_{6} that occurs at 52 T. The new phase transition accompanies a colossal magnetoelectric effect, with a magnetic-field-induced polarization change of 0.3 μC/cm^{2}, a value that is 4 times larger than for the spin-flop transition at 9 T in the same material, and also comparable to the largest magnetically induced polarization changes observed to date. Via density-functional calculations we construct a full microscopic model that describes the data. We model the spin structures in all fields and clarify the physics behind the 52 T transition. The high-field transition involves a competition between multiple different exchange interactions which drives the polarization change through the exchange-striction mechanism. The resultant spin structure is rather counterintuitive and complex, thus providing new insights on design principles for materials with strong magnetoelectric coupling.
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Affiliation(s)
- Jae Wook Kim
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
- Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - S Artyukhin
- IAMDN and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - E D Mun
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M Jaime
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - N Harrison
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - A Hansen
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - J J Yang
- Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Y S Oh
- Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - D Vanderbilt
- IAMDN and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - V S Zapf
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S-W Cheong
- Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
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25
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Wang Y, Pascut GL, Gao B, Tyson TA, Haule K, Kiryukhin V, Cheong SW. Unveiling hidden ferrimagnetism and giant magnetoelectricity in polar magnet Fe2Mo3O8. Sci Rep 2015; 5:12268. [PMID: 26194108 PMCID: PMC4508583 DOI: 10.1038/srep12268] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 06/19/2015] [Indexed: 11/09/2022] Open
Abstract
Magnetoelectric (ME) effect is recognized for its utility for low-power electronic devices. Largest ME coefficients are often associated with phase transitions in which ferroelectricity is induced by magnetic order. Unfortunately, in these systems, large ME response is revealed only upon elaborate poling procedures. These procedures may become unnecessary in single-polar-domain crystals of polar magnets. Here we report giant ME effects in a polar magnet Fe2Mo3O8 at temperatures as high as 60 K. Polarization jumps of 0.3 μC/cm2, and repeated mutual control of ferroelectric and magnetic moments with differential ME coefficients on the order of 104 ps/m are achieved. Importantly, no electric or magnetic poling is needed, as necessary for applications. The sign of the ME coefficients can be switched by changing the applied “bias” magnetic field. The observed effects are associated with a hidden ferrimagnetic order unveiled by application of a magnetic field.
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Affiliation(s)
- Yazhong Wang
- Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Gheorghe L Pascut
- Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Bin Gao
- Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Trevor A Tyson
- 1] Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA [2] Department of Physics, New Jersey Institute of Technology, Newark, New Jersey 07102, USA
| | - Kristjan Haule
- Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Valery Kiryukhin
- Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Sang-Wook Cheong
- Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
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26
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Martins P, Kolen'ko YV, Rivas J, Lanceros-Mendez S. Tailored Magnetic and Magnetoelectric Responses of Polymer-Based Composites. ACS APPLIED MATERIALS & INTERFACES 2015; 7:15017-22. [PMID: 26110461 DOI: 10.1021/acsami.5b04102] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The manipulation of electric ordering with applied magnetic fields has been realized on magnetoelectric (ME) materials; however, their ME switching is often accompanied by significant hysteresis and coercivity that represents for some applications a severe weakness. To overcome this obstacle, this work focuses on the development of a new type of ME polymer nanocomposites that exhibits a tailored ME response at room temperature. The multiferroic nanocomposites are based on three different ferrite nanoparticles, Zn0.2Mn0.8Fe2O4 (ZMFO), CoFe2O4 (CFO) and Fe3O4 (FO), dispersed in a piezoelectric copolymer poly(vinylindene fluoride-trifluoroethylene) (P(VDF-TrFE)) matrix. No substantial differences were detected in the time-stable piezoelectric response of the composites (∼-28 pC·N(1-)) with distinct ferrite fillers and for the same ferrite content of 10 wt %. Magnetic hysteresis loops from pure ferrite nanopowders showed different magnetic responses. ME results of the nanocomposite films with 10 wt % ferrite content revealed that the ME induced voltage increases with increasing dc magnetic field until a maximum of 6.5 mV·cm(-1)·Oe(1-), at an optimum magnetic field of 0.26 T, and 0.8 mV·cm(-1)·Oe(1-), at an optimum magnetic field of 0.15 T, for the CFO/P(VDF-TrFE) and FO/P(VDF-TrFE) composites, respectively. In contrast, the ME response of ZMFO/P(VDF-TrFE) exposed no hysteresis and high dependence on the ZMFO filler content. Possible innovative applications such as memories and information storage, signal processing, and ME sensors and oscillators have been addressed for such ferrite/PVDF nanocomposites.
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Affiliation(s)
- P Martins
- †Centro/Departamento de Física, Universidade do Minho, 4710-057 Braga, Portugal
| | - Yu V Kolen'ko
- ‡International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, 4715-330 Braga, Portugal
| | - J Rivas
- ‡International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, 4715-330 Braga, Portugal
- ∥Nanomag Laboratory, Department of Applied Physics, Technological Research Institute, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - S Lanceros-Mendez
- †Centro/Departamento de Física, Universidade do Minho, 4710-057 Braga, Portugal
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Li MR, Retuerto M, Walker D, Sarkar T, Stephens PW, Mukherjee S, Dasgupta TS, Hodges JP, Croft M, Grams CP, Hemberger J, Sánchez-Benítez J, Huq A, Saouma FO, Jang JI, Greenblatt M. Magnetic-Structure-Stabilized Polarization in an Above-Room-Temperature Ferrimagnet. Angew Chem Int Ed Engl 2014; 53:10774-8. [DOI: 10.1002/anie.201406180] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Indexed: 11/06/2022]
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28
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Li MR, Retuerto M, Walker D, Sarkar T, Stephens PW, Mukherjee S, Dasgupta TS, Hodges JP, Croft M, Grams CP, Hemberger J, Sánchez-Benítez J, Huq A, Saouma FO, Jang JI, Greenblatt M. Magnetic-Structure-Stabilized Polarization in an Above-Room-Temperature Ferrimagnet. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201406180] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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