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Kisiček V, Dominko D, Čulo M, Rapljenović Ž, Kuveždić M, Dragičević M, Berger H, Rocquefelte X, Herak M, Ivek T. Spin-Reorientation-Driven Linear Magnetoelectric Effect in Topological Antiferromagnet Cu_{3}TeO_{6}. PHYSICAL REVIEW LETTERS 2024; 132:096701. [PMID: 38489626 DOI: 10.1103/physrevlett.132.096701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/11/2023] [Accepted: 01/05/2024] [Indexed: 03/17/2024]
Abstract
The search for new materials for energy-efficient electronic devices has gained unprecedented importance. Among the various classes of magnetic materials driving this search are antiferromagnets, magnetoelectrics, and systems with topological spin excitations. Cu_{3}TeO_{6} is a material that belongs to all three of these classes. Combining static electric polarization and magnetic torque measurements with phenomenological simulations we demonstrate that magnetic-field-induced spin reorientation needs to be taken into account to understand the linear magnetoelectric effect in Cu_{3}TeO_{6}. Our calculations reveal that the magnetic field pushes the system from the nonpolar ground state to the polar magnetic structures. However, nonpolar structures only weakly differing from the obtained polar ones exist due to the weak effect that the field-induced breaking of some symmetries has on the calculated structures. Among those symmetries is the PT (1[over ¯]^{'}) symmetry, preserved for Dirac points found in Cu_{3}TeO_{6}. Our findings establish Cu_{3}TeO_{6} as a promising playground to study the interplay of spintronics-related phenomena.
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Affiliation(s)
- Virna Kisiček
- Institute of Physics, Bijenička cesta 46, 10 000 Zagreb, Croatia
- Faculty of Physics, University of Rijeka, Radmile Matejčić 2, 51 000 Rijeka, Croatia
| | - Damir Dominko
- Institute of Physics, Bijenička cesta 46, 10 000 Zagreb, Croatia
| | - Matija Čulo
- Institute of Physics, Bijenička cesta 46, 10 000 Zagreb, Croatia
| | | | - Marko Kuveždić
- Department of Physics, Faculty of Science, University of Zagreb, Bijenička cesta 32, 10 000 Zagreb, Croatia
| | | | - Helmuth Berger
- Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Xavier Rocquefelte
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226, F-35000 Rennes, France
| | - Mirta Herak
- Institute of Physics, Bijenička cesta 46, 10 000 Zagreb, Croatia
| | - Tomislav Ivek
- Institute of Physics, Bijenička cesta 46, 10 000 Zagreb, Croatia
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Moin M, Waheed Anwar A, Babar M, Thumu U, Ali A. Comparative investigations of electronic, mechanical and optical responses of Ra-doping in Barium Titanate for optoelectronic applications: A computational insight. Heliyon 2024; 10:e24607. [PMID: 38312615 PMCID: PMC10835252 DOI: 10.1016/j.heliyon.2024.e24607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 01/10/2024] [Accepted: 01/10/2024] [Indexed: 02/06/2024] Open
Abstract
This unique study examined the theoretical pure BaTiO3 and doped Ra (Ba1-xRaxTiO3) impact on electronic, mechanical and optical responses were using Heydscuseria-Ernzerhof screened hybrid functional (HSE06) and generalized gradient approximation (GGA-PBE) with norm-converging pseudopotential approaches in the density functional theory. Computed the lattice constant and bond lengths for pure (BaTiO3) and doped atoms as well as explored the changes of consequences of electronic, mechanical and optical responses. The calculated values indicate the BaTiO3 is an indirect characteristic and an optically inactive nature. The low energy state and also conduction band of the crystal structure to transform to the direction of low energy and narrows the electronic band gap. The bandgap of pure BaTiO3 is continually reduced which shifts the Fermi energy level Eg. When increasing the doping impurities (x) of (Ra) in BaTiO3, the band gap shifts from indirect (X-G) to direct (X-X) nature and become optically active. The elastic and mechanical responses are essential for suitable (Ra) doped material ensuring structural integrity and predicting a ductile behavior. Kleinman coefficient (ξ ) , it is clear that (Ra)-doped materials shows slightly large resistance to bond bending and bond angle distortion as compare to pure BaTiO3. Optical characteristics of the both pure and doped (Ra) materials in the core level spectra are thoroughly investigated. Optical coefficients are obtained in the energy scale start from 0 to 20 eV. Moreover, the results of optical properties show excellent influence of doping so that this material can be employed as UV filter in the UV region and in optoelectronics devices.
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Affiliation(s)
- Muhammad Moin
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, China
| | - Abdul Waheed Anwar
- Department of Physics, University of Engineering and Technology, Lahore, Pakistan
| | - Mehrunisa Babar
- Department of Physics, University of Engineering and Technology, Lahore, Pakistan
| | - Udayabhaskararao Thumu
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, China
| | - Anwar Ali
- Department of Physics, University of Engineering and Technology, Lahore, Pakistan
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3
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Parveen A, Abbas Z, Hussain S, Shaikh SF, Aslam M, Jung J. Theoretical Justification of Structural, Magnetoelectronic and Optical Properties in QFeO 3 (Q = Bi, P, Sb): A First-Principles Study. MICROMACHINES 2023; 14:2251. [PMID: 38138420 PMCID: PMC10745569 DOI: 10.3390/mi14122251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/29/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023]
Abstract
One of the primary objectives of scientific research is to create state-of-the-art multiferroic (MF) materials that exhibit interconnected properties, such as piezoelectricity, magnetoelectricity, and magnetostriction, and remain functional under normal ambient temperature conditions. In this study, we employed first-principles calculations to investigate how changing pnictogen elements affect the structural, electronic, magnetic, and optical characteristics of QFeO3 (Q = Bi, P, SB). Electronic band structures reveal that BiFeO3 is a semiconductor compound; however, PFeO3 and SbFeO3 are metallic. The studied compounds are promising for spintronics, as they exhibit excellent magnetic properties. The calculated magnetic moments decreased as we replaced Bi with SB and P in BiFeO3. A red shift in the values of ε2(ω) was evident from the presented spectra as we substituted Bi with Sb and P in BiFeO3. QFeO3 (Q = Bi, P, SB) showed the maximum absorption of incident photons in the visible region. The results obtained from calculating the optical parameters suggest that these materials have a strong potential to be used in photovoltaic applications.
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Affiliation(s)
- Amna Parveen
- College of Pharmacy, Gachon University, No. 191, Hambakmeoro, Yeonsu-gu, Incheon 21936, Republic of Korea
| | - Zeesham Abbas
- Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea; (Z.A.); (S.H.)
| | - Sajjad Hussain
- Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea; (Z.A.); (S.H.)
| | - Shoyebmohamad F. Shaikh
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Muhammad Aslam
- Institute of Physics and Technology, Ural Federal University, Mira Str. 19, 620002 Yekaterinburg, Russia
| | - Jongwan Jung
- Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea; (Z.A.); (S.H.)
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Shah SQA, Annaorazov M, Rimal G, Wang J, Borunda MF, Tang J, Yost AJ. Controlling the Magneto-Optical Response in Ultrathin Films of EuO 1-x via Interface Engineering with Ferroelectric BaTi 2O 5. ACS APPLIED MATERIALS & INTERFACES 2023; 15:10141-10149. [PMID: 36774653 DOI: 10.1021/acsami.2c18842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Utilizing pulsed laser deposition, a film of EuO1-x was deposited onto a Si(001) substrate with MgO buffer and compared to the same heterostructure with an additional BaTi2O5 thin film on top of the EuO1-x surface. X-ray diffraction (XRD) indicates the films crystallize into a preferred EuO(111) orientation; it also reveals the clear presence of EuSi2, which suggests Si or Eu diffuses across the MgO buffer layer. EuO1-x films exhibit a ferromagnetic (FM) signature and temperature-dependent exchange bias, indicated by MOKE measurements, suggesting the presence of a magnetic order well above the EuO Curie temperature with possible origins in charge carrier density near the interface. In comparison, an antiferromagnetic character persists well above the EuO Curie temperature of 69 K and the enhanced Curie temperature of 150 K for BaTi2O5 films grown on the EuO1-x films. The antiferromagnetic behavior is not seen in thicker EuO1-x thin films when integrated with other ferroelectric (FE) phases of the BaO-TiO2 system, suggesting an origin in the perturbed charge population at the BaTi2O5/EuO1-x interface.
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Affiliation(s)
- Syed Q A Shah
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, Nebraska 68588 United States
| | - Muhammet Annaorazov
- Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078-3072 United States
| | - Gaurab Rimal
- Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854 United States
- Department of Physics and Astronomy, University of Wyoming, Laramie, Wyoming 82071 United States
| | - Jian Wang
- Canadian Light Source Inc., 44 Innovation Boulevard, Saskatoon, Saskatchewan S7N 2V3, Canada
| | - Mario F Borunda
- Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078-3072 United States
| | - Jinke Tang
- Department of Physics and Astronomy, University of Wyoming, Laramie, Wyoming 82071 United States
| | - Andrew J Yost
- Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078-3072 United States
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Shen X, Zhou L, Liu Z, He J, Ye X, Liu G, Qin S, Lu D, Zhang J, Sun Y, Long Y. Magnetoelectric and Magnetostrictive Effects in Scheelite-Type HoCrO 4. Inorg Chem 2022; 61:14030-14037. [PMID: 35984686 DOI: 10.1021/acs.inorgchem.2c02022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Scheelite-type HoCrO4 was prepared by treating the ambient-pressure zircon-type precursor phase under 8 GPa and 700 K. A long-range antiferromagnetic phase transition is found to occur at TN ≈ 23 K due to the spin order of Ho3+ and Cr5+ magnetic ions. However, the antiferromagnetic ground state is sensitive to an external magnetic field and a moderate field of about 1.1 T can induce a metamagnetic transition, giving rise to the presence of a large magnetization up to 8.5 μB/f.u. at 2 K and 7 T. Considerable linear magnetoelectric effect is observed in the antiferromagnetic state, while the induced electric polarization experiences a sharp increase near the critical field of the metamagnetic transition. Ferromagnetism and ferroelectricity thus rarely coexist under higher magnetic fields in scheelite-type HoCrO4. Moreover, a magnetic field also plays an important role in the longitudinal constriction of HoCrO4, and a significant magnetostrictive effect with a value of up to 300 ppm is observed at 2 K and 9 T, which can be attributed to the strong anisotropy of the rare-earth Ho3+ ion. Possible coupling between magnetoelectric and magnetoelastic effects is discussed.
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Affiliation(s)
- Xudong Shen
- Songshan Lake Materials Laboratory, Dongguan 523808, Guangdong, China.,Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Long Zhou
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhehong Liu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jincheng He
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.,Center of Quantum Materials and Devices and Department of Applied Physics, Chongqing University, Chongqing 401331, China
| | - Xubin Ye
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guangxiu Liu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shijun Qin
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dabiao Lu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jie Zhang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Young Sun
- Center of Quantum Materials and Devices and Department of Applied Physics, Chongqing University, Chongqing 401331, China
| | - Youwen Long
- Songshan Lake Materials Laboratory, Dongguan 523808, Guangdong, China.,Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
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Flux Method Growth and Structure and Properties Characterization of Rare-Earth Iron Oxides Lu1−xScxFeO3 Single Crystals. CRYSTALS 2022. [DOI: 10.3390/cryst12060769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Perovskite rare-earth ferrites (REFeO3) have attracted great attention for their high ferroelectric and magnetic transition temperatures, strong magnetoelectric coupling, and electric polarization. We report on the flux method growth of rare-earth iron oxide Lu1−xScxFeO3 single crystals through a K2CO3-B2O3-Bi2O3 mixture as a flux solution, and give a detailed characterization of the microstructure, magnetism, and ferroelectric properties. X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDX) measurements revealed that the obtained single crystals can be designated to three different crystal structures of different chemical compositions, that is, Lu0.96Sc0.04FeO3 (perovskite phase), Lu0.67Sc0.33FeO3 (hexagonal phase), and Lu0.2Sc0.8FeO3 (bixbyite phase), respectively. Magnetic measurements indicate that the perovskite Lu0.96Sc0.04FeO3 is an anisotropic hard ferromagnetic material with a high Curie transition temperature, the bixbyite Lu0.2Sc0.8FeO3 is a low temperature soft ferromagnetic material, and the hexagonal Lu0.67Sc0.33FeO3 exhibits multiferroic properties. Lu0.67Sc0.33FeO3 possesses a weak ferromagnetic transition at about 162 K. We further investigate the ferroelectric domain structures in hexagonal sample by scanning electron microscope and the characteristic atomic structures in ferroelectric domain walls by atomically resolved scanning transmission electron microscope. Our successful growth of perovskite Lu1−xScxFeO3 single crystals with distinct crystal structures and stochiometric Lu-Sc substitutions is anticipated to provide a useful ferrites system for furthering exploitation of their multiferroic properties and functionalities.
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7
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Repeatable and deterministic all electrical switching in a mixed phase artificial multiferroic. Sci Rep 2022; 12:5332. [PMID: 35351999 PMCID: PMC8964689 DOI: 10.1038/s41598-022-09417-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 03/15/2022] [Indexed: 11/25/2022] Open
Abstract
We demonstrate a repeatable all-electric magnetic switching behaviour in a PMN-PT/FeRh thin film artificial multiferroic. The magnitude of the effect is significantly smaller than expected from conventional thermomagnetic switching of FeRh thin films and we explore properties of the PMN-PT/FeRh system in order to understand the origin of this reduction. The data demonstrate the importance of the crystallographic phase of PMN-PT and show how a phase transition at ~ 100 °C modifies the magneto-electric coupling. We demonstrate a large strain remanence effect in the PMN-PT substrate, which limits the magnetoelectric coupling on successive cycling of the applied electric field.
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8
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A diagnosis approach for semiconductor properties evaluation from ab initio calculations: Ag-based materials investigation. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2021.122670] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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9
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Saini J, Sharma M, Kuanr BK. Role of Ce concentration on the structural and magnetic properties of functional magnetic oxide particles. NANOSCALE ADVANCES 2021; 3:6074-6087. [PMID: 36133940 PMCID: PMC9419517 DOI: 10.1039/d1na00227a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 08/25/2021] [Indexed: 06/16/2023]
Abstract
Functional magnetic oxide particles offer exceptional GHz frequency capabilities, which can significantly enhance the utility of communication and signal processing devices. In the present work, we have investigated the structural and magnetic properties of rational multifunctional oxide Y2.9-x Ce x Bi0.1Fe5O12 particles - a full series with x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1 via a conventional solid-state route. The X-ray diffraction pattern validated the Ia3̄d cubic garnet phase in all samples. From Rietveld refinement, it is observed that the ceric oxide (CeO2) impurity increases with an increase of Ce concentration, evincing a partial substitution of cerium (Ce) element into the garnet structure. The magnetic oxide particles with Ce concentration x = 0.4 showed a better crystallite size, dodecahedral site occupancy and solubility of cerium in the garnet phase. The morphological visualization of random shaped grains in the micrometer range was performed using the scanning electron microscopy (SEM) technique. The static magnetic properties showed that the saturation magnetization (M s) decreases up to 43% and coercivity increases up to 59% with the increase of Ce concentration. The dynamic investigation on these oxide particles exhibits various intriguing and novel properties. Various intrinsic material parameters such as saturation magnetization (M s), gyromagnetic ratio (γ), Gilbert damping constant (α) and extrinsic contribution (ΔH o) to linewidth were determined from the fitting of resonance field (H r) and field linewidth (ΔH r) data. We ascertained that the damping constant increases with the increase of Ce concentration, which can be explained in terms of two magnon scattering and local defects caused by CeO2 inhomogeneity. The proposed doped garnets can be a potential candidate for high frequency microwave applications and spin-transfer-torque devices.
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Affiliation(s)
- Jyoti Saini
- Special Centre for Nanoscience, Jawaharlal Nehru University New Delhi 110067 India
| | - Monika Sharma
- Special Centre for Nanoscience, Jawaharlal Nehru University New Delhi 110067 India
- Department of Physics, Deshbandhu College, University of Delhi New Delhi 110019 India
| | - Bijoy Kumar Kuanr
- Special Centre for Nanoscience, Jawaharlal Nehru University New Delhi 110067 India
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10
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Zvezdin AK, Gareeva ZV, Chen XM. Multiferroic order parameters in rhombic antiferromagnets RCrO 3. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:385801. [PMID: 34161933 DOI: 10.1088/1361-648x/ac0dd6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 06/23/2021] [Indexed: 06/13/2023]
Abstract
Currently, active research is aimed at perovskite-based oxides, including rare earth orthochromites, which exhibit magnetoelectric properties owed to intrinsic magnetic interactions in external electric and magnetic fields. Due to a variety of structural instabilities and couplings in these materials, understanding the underlying magnetoelectric mechanisms is a challenge. In this paper, we explore magnetoelectric properties of the rare earth orthochromites in the framework of symmetry analysis. Our calculations show the presence inRCrO3of electric dipole moments localized in the vicinity of Cr3+ions. The electric dipole moments, appearing due to the displacements of oxygen ions from their highly symmetric positions in the parent perovskite phase, are arranged in an antiferroelectric mode. We have demonstrated the presence of electric dipole moments in the unit cell ofRCrO3,localized in the vicinity of Cr3+ions. The inversion symmetry breaks due to the displacements of oxygen ions from their highly symmetric positions in the parent perovskite phase, the electric dipoles become arranged in an antiferroelectric mode. We have introduced the basic distortive order parameters in consistence with the symmetry ofRCrO3: the polar order parameters (D,Q2,Q3,P) and the axial order parameterΩband classified them according to the irreducible representations of theRCrO3symmetry group (D2h16). We have determined the symmetry-allowed couplings between distortive, ferroelectric and magnetic orderings and found possible exchange-coupled magnetic and ferroelectric structures. The presented analysis makes it possible to explain experimentally observed polarization reversal and the concomitant reorientation of spins in a series ofRCrO3compounds and to predict the possible scenarios of phase transitions inRCrO3.
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Affiliation(s)
- A K Zvezdin
- Prokhorov General Physics Institute, Russian Academy of Sciences, Vavilov Str. 38, 119991, Moscow, Russia
| | - Z V Gareeva
- Institute of Molecule and Crystal Physics, Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences, Prospect Octyabrya 151, 450075, Ufa, Russia
| | - X M Chen
- Laboratory of Dielectric Materials, School of Materials Science and Engineering, Zhejiang University, Zheda Road 38, 310027, Hangzhou, People's Republic of China
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11
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Liu X, Wang B, Huang X, Dong X, Ren Y, Zhao H, Long L, Zheng L. Room-Temperature Magnetoelectric Coupling in Electronic Ferroelectric Film based on [( n-C 3H 7) 4N][Fe IIIFe II(dto) 3] (dto = C 2O 2S 2). J Am Chem Soc 2021; 143:5779-5785. [PMID: 33847129 DOI: 10.1021/jacs.1c00601] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Great importance has been attached to magnetoelectric coupling in multiferroic thin films owing to their extremely practical use in a new generation of devices. Here, a film of [(n-C3H7)4N][FeIIIFeII(dto)3] (1; dto = C2O2S2) was fabricated using a simple stamping process. As was revealed by our experimental results, in-plane ferroelectricity over a wide temperature range from 50 to 300 K was induced by electron hopping between FeII and FeIII sites. This mechanism was further confirmed by the ferroelectric observation of the compound [(n-C3H7)4N][FeIIIZnII(dto)3] (2; dto = C2O2S2), in which FeII ions were replaced by nonmagnetic metal ZnII ions, resulting in no obvious ferroelectric polarization. However, both ferroelectricity and magnetism are related to the magnetic Fe ions, implying a strong magnetoelectric coupling in 1. Through piezoresponse force microscopy (PFM), the observation of magnetoelectric coupling was achieved by manipulating ferroelectric domains under an in-plane magnetic field. The present work not only provides new insight into the design of molecular-based electronic ferroelectric/magnetoelectric materials but also paves the way for practical applications in a new generation of electronic devices.
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Affiliation(s)
- Xiaolin Liu
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Bin Wang
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Xiaofeng Huang
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Xinwei Dong
- Department of Physics and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen 361005, People's Republic of China
| | - Yanping Ren
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Haixia Zhao
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Lasheng Long
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Lansun Zheng
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
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12
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Suturin SM, Korovin AM, Sitnikova AA, Kirilenko DA, Volkov MP, Dvortsova PA, Ukleev VA, Tabuchi M, Sokolov NS. Correlation between crystal structure and magnetism in PLD grown epitaxial films of ε-Fe 2O 3 on GaN. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2021; 22:85-99. [PMID: 35185387 PMCID: PMC8856044 DOI: 10.1080/14686996.2020.1870870] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 12/25/2020] [Accepted: 12/29/2020] [Indexed: 06/14/2023]
Abstract
In the present paper we discuss correlations between crystal structure and magnetic properties of epitaxial ε-Fe2O3 films grown on GaN. The large magnetocrystalline anisotropy and room temperature multiferroic properties of this exotic iron oxide polymorph, make it a perspective material for the development of low power consumption magnetic media storage devices. Extending our recent progress in PLD growth of ε-Fe2O3 on the surface of technologically important nitride semiconductors, we apply reciprocal space tomography by electron and x-ray diffraction to investigate the break of crystallographic symmetry occurring at the oxide-nitride interface resulting in the appearance of anisotropic crystallographic disorder in the sub-100 nm ε-Fe2O3 films. The orthorhombic-on-hexagonal nucleation scenario is shown responsible for the development of a peculiar columnar structure observed in ε-Fe2O3 by means of HRTEM and AFM. The complementary information on the direct and reciprocal space structure of the columnar ε-Fe2O3 films is obtained by various techniques and correlated to their magnetic properties. The peculiar temperature dependence of magnetization studied by the small-field magnetization derivative method and by neutron diffraction reveals the existence of a magnetic softening below 150 K, similar to the one observed earlier solely in nanoparticles. The magnetization reversal in ε-Fe2O3 films probed by X-ray magnetic circular dichroism is found different from the behavior of the bulk averaged magnetization measured by conventional magnetometry. The presented results fill the gap between the numerous studies performed on randomly oriented ε-Fe2O3 nanoparticles and much less frequent investigations of epitaxial epsilon ferrite films with lattice orientation fixed by the substrate.
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Affiliation(s)
- Sergey M. Suturin
- Division of Solid State Physics, Division of Physics of Dielectrics and Semiconductors, Centre of Nanoheterostructure Physics, Ioffe Institute, St. Petersburg, Russia
| | - Alexander M. Korovin
- Division of Solid State Physics, Division of Physics of Dielectrics and Semiconductors, Centre of Nanoheterostructure Physics, Ioffe Institute, St. Petersburg, Russia
| | - Alla A. Sitnikova
- Division of Solid State Physics, Division of Physics of Dielectrics and Semiconductors, Centre of Nanoheterostructure Physics, Ioffe Institute, St. Petersburg, Russia
| | - Demid A. Kirilenko
- Division of Solid State Physics, Division of Physics of Dielectrics and Semiconductors, Centre of Nanoheterostructure Physics, Ioffe Institute, St. Petersburg, Russia
| | - Mikhail P. Volkov
- Division of Solid State Physics, Division of Physics of Dielectrics and Semiconductors, Centre of Nanoheterostructure Physics, Ioffe Institute, St. Petersburg, Russia
| | - Polina A. Dvortsova
- Division of Solid State Physics, Division of Physics of Dielectrics and Semiconductors, Centre of Nanoheterostructure Physics, Ioffe Institute, St. Petersburg, Russia
| | - Victor A. Ukleev
- Laboratory for Neutron Scattering and Imaging (LNS), Paul Scherrer Institute (PSI), Villigen, Switzerland
| | - Masao Tabuchi
- Synchrotron Radiation Research Center, Nagoya University, Nagoya, Japan
| | - Nikolai S. Sokolov
- Division of Solid State Physics, Division of Physics of Dielectrics and Semiconductors, Centre of Nanoheterostructure Physics, Ioffe Institute, St. Petersburg, Russia
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13
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Effect of rare earth on physical properties of Na0.5Bi0.5TiO3 system: A density functional theory investigation. J RARE EARTH 2020. [DOI: 10.1016/j.jre.2020.12.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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14
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Lee YW, Soh JY, Yoo IR, Cho J, Ahn CW, Choi JJ, Hahn BD, Cho KH. High Magnetic Field Sensitivity in Ferromagnetic-Ferroelectric Composite with High Mechanical Quality Factor. SENSORS 2020; 20:s20226635. [PMID: 33228129 PMCID: PMC7699316 DOI: 10.3390/s20226635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/13/2020] [Accepted: 11/18/2020] [Indexed: 11/16/2022]
Abstract
In this study, composite devices were fabricated using ferromagnetic FeSiB-based alloys (Metglas) and ferroelectric ceramics, and their magnetic field sensitivity was evaluated. Sintered 0.95Pb(Zr0.52Ti0.48)O3-0.05Pb(Mn1/3Sb2/3)O3 (PZT-PMS) ceramic exhibited a very dense microstructure with a large piezoelectric voltage coefficient (g31 = −16.8 × 10−3 VmN−1) and mechanical quality factor (Qm > 1600). Owing to these excellent electromechanical properties of the PZT-PMS, the laminate composite with a Metglas/PZT-PMS/Metglas sandwich structure exhibited large magnetoelectric voltage coefficients (αME) in both off-resonance and resonance modes. When the length-to-width aspect ratio (l/w) of the composite was controlled, αME slightly varied in the off-resonance mode, resulting in similar sensitivity values ranging from 129.9 to 146.81 VT−1. Whereas in the resonance mode, the composite with small l/w exhibited a large reduction of αME and sensitivity values. When controlling the thickness of the PZT-PMS (t), the αME of the composite showed the largest value when t was the smallest in the off-resonance mode, while αME was the largest when t is the largest in the resonance mode. The control of t slightly affected the sensitivity in the off-resonance mode, however, higher sensitivity was obtained as t increased in the resonance mode. The results demonstrate that the sensitivity, varying with the dimensional control of the composite, is related to the mechanical loss of the sensor. The composite sensor with the PZT-PMS layer exhibited excellent magnetic field sensitivity of 1.49 × 105 VT−1 with a sub-nT sensing limit, indicating its potential for application in high-performance magnetoelectric sensor devices.
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Affiliation(s)
- Yong-Woo Lee
- School of Materials Science and Engineering, Kumoh National Institute of Technology, Gumi 39177, Korea; (Y.-W.L.); (I.-R.Y.)
| | - Joon-Young Soh
- New & Renewable Energy Lab., KEPCO Research Institute, Daejeon 34056, Korea;
| | - Il-Ryeol Yoo
- School of Materials Science and Engineering, Kumoh National Institute of Technology, Gumi 39177, Korea; (Y.-W.L.); (I.-R.Y.)
| | - Jiung Cho
- Western Seoul Center, Korea Basic Science Institute, Seoul 03579, Korea
- Correspondence: (J.C.); (K.-H.C.); Tel.: +82-2-6908-6222 (J.C.); +82-54-478-7749 (K.-H.C.)
| | - Cheol-Woo Ahn
- Korea Institute of Materials Science (KIMS), Changwon 51508, Korea; (C.-W.A.); (J.-J.C.); (B.-D.H.)
| | - Jong-Jin Choi
- Korea Institute of Materials Science (KIMS), Changwon 51508, Korea; (C.-W.A.); (J.-J.C.); (B.-D.H.)
| | - Byung-Dong Hahn
- Korea Institute of Materials Science (KIMS), Changwon 51508, Korea; (C.-W.A.); (J.-J.C.); (B.-D.H.)
| | - Kyung-Hoon Cho
- School of Materials Science and Engineering, Kumoh National Institute of Technology, Gumi 39177, Korea; (Y.-W.L.); (I.-R.Y.)
- Correspondence: (J.C.); (K.-H.C.); Tel.: +82-2-6908-6222 (J.C.); +82-54-478-7749 (K.-H.C.)
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15
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Ko K, Yang SC. Magnetoelectric Membrane Filters of Poly(vinylidene fluoride)/Cobalt Ferrite Oxide for Effective Capturing of Particulate Matter. Polymers (Basel) 2020; 12:E2601. [PMID: 33167528 PMCID: PMC7694521 DOI: 10.3390/polym12112601] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 10/31/2020] [Accepted: 11/04/2020] [Indexed: 01/25/2023] Open
Abstract
In the last decade, particulate matter (PM) has gradually become a serious public health issue due to its harmful impact on the human body. In this study, we report a novel filtration system for high PM capturing, based on the magnetoelectric (ME) effect that induces an effective surface charge in membrane filters. To elucidate the ME effect on PM capturing, we prepared electrospun poly(vinylidene fluoride)(PVDF)/CoFe2O4(CFO) membranes and investigated their PM capturing efficiency. After electrical poling under a high electric field of 10 kV/mm, PM-capturing efficiencies of the poled-PVDF/CFO membrane filters were improved with carbon/fluorine(C/F) molar ratios of C/F = 4.81 under Hdc = 0 and C/F = 7.01 under Hdc = 700 Oe, respectively. The result illustrates that electrical poling and a dc magnetic field could, respectively, enhance the surface charge of the membrane filters through (i) a strong beta-phase alignment in PVDF (poling effect) and (ii) an efficient shape change of PVDF/CFO membranes (magnetostriction effect). The diffusion rate of a water droplet on the PVDF/CFO membrane surface is reduced from 0.23 to 0.05 cm2/s by covering the membrane surface with PM. Consequently, the PM capturing efficiency is dramatically improved up to 175% from ME membranes with the poling process and applying a magnetic field. Furthermore, the PM was successfully captured on the prototype real mask derived from the magnetoelectric effect induced by a permanent magnet with a diameter of 2 cm without any external power.
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Affiliation(s)
| | - Su-Chul Yang
- Department of Chemical Engineering (BK21 FOUR), Dong-A University, Busan 49315, Korea;
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16
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Pradhan DK, Kumari S, Rack PD. Magnetoelectric Composites: Applications, Coupling Mechanisms, and Future Directions. NANOMATERIALS 2020; 10:nano10102072. [PMID: 33092147 PMCID: PMC7589497 DOI: 10.3390/nano10102072] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 10/08/2020] [Accepted: 10/12/2020] [Indexed: 12/04/2022]
Abstract
Multiferroic (MF)-magnetoelectric (ME) composites, which integrate magnetic and ferroelectric materials, exhibit a higher operational temperature (above room temperature) and superior (several orders of magnitude) ME coupling when compared to single-phase multiferroic materials. Room temperature control and the switching of magnetic properties via an electric field and electrical properties by a magnetic field has motivated research towards the goal of realizing ultralow power and multifunctional nano (micro) electronic devices. Here, some of the leading applications for magnetoelectric composites are reviewed, and the mechanisms and nature of ME coupling in artificial composite systems are discussed. Ways to enhance the ME coupling and other physical properties are also demonstrated. Finally, emphasis is given to the important open questions and future directions in this field, where new breakthroughs could have a significant impact in transforming scientific discoveries to practical device applications, which can be well-controlled both magnetically and electrically.
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Affiliation(s)
- Dhiren K. Pradhan
- Department of Materials Science & Engineering, University of Tennessee, Knoxville, TN 37996, USA
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- Correspondence: (D.K.P.); (P.D.R.)
| | - Shalini Kumari
- Department of Materials Science & Engineering, The Pennsylvania State University, University Park, PA 16802, USA;
| | - Philip D. Rack
- Department of Materials Science & Engineering, University of Tennessee, Knoxville, TN 37996, USA
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- Correspondence: (D.K.P.); (P.D.R.)
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17
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Petrov R, Leontiev V, Sokolov O, Bichurin M, Bozhkov S, Milenov I, Bozhkov P. A Magnetoelectric Automotive Crankshaft Position Sensor. SENSORS 2020; 20:s20195494. [PMID: 32992763 PMCID: PMC7582794 DOI: 10.3390/s20195494] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 09/09/2020] [Accepted: 09/22/2020] [Indexed: 11/16/2022]
Abstract
The paper is devoted to the possibility of using magnetoelectric materials for the production of a crankshaft position sensor for automobiles. The composite structure, consisting of a PZT or LiNbO3 piezoelectric with a size of 20 mm × 5 mm × 0.5 mm, and plates of the magnetostrictive material Metglas of the appropriate size were used as a sensitive element. The layered structure was made from a bidomain lithium niobate monocrystal with a Y + 128° cut and amorphous metal of Metglas. Various combinations of composite structures are also investigated; for example, asymmetric structures using a layer of copper and aluminum. The output characteristics of these structures are compared in the resonant and non-resonant modes. It is shown that the value of the magnetoelectric resonant voltage coefficient was 784 V/(cm·Oe), and the low-frequency non-resonant magnetoelectric coefficient for the magnetoelectric element was about 3 V/(cm·Oe). The principle of operation of the position sensor and the possibility of integration into automotive systems, using the CAN bus, are examined in detail. To obtain reliable experimental results, a special stand was assembled on the basis of the SKAD-1 installation. The studies showed good results and a high prospect for the use of magnetoelectric sensors as position sensors and, in particular, of a vehicle’s crankshaft position sensor.
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Affiliation(s)
- Roman Petrov
- Institute of Electronic and Information Systems, Novgorod State University, 173003 Veliky Novgorod, Russia; (V.L.); (O.S.); (M.B.)
- Correspondence: ; Tel.: +7-8162-974267
| | - Viktor Leontiev
- Institute of Electronic and Information Systems, Novgorod State University, 173003 Veliky Novgorod, Russia; (V.L.); (O.S.); (M.B.)
| | - Oleg Sokolov
- Institute of Electronic and Information Systems, Novgorod State University, 173003 Veliky Novgorod, Russia; (V.L.); (O.S.); (M.B.)
| | - Mirza Bichurin
- Institute of Electronic and Information Systems, Novgorod State University, 173003 Veliky Novgorod, Russia; (V.L.); (O.S.); (M.B.)
| | - Slavcho Bozhkov
- Faculty of Machinery and Construction Technologies in Transport, Todor Kableshkov University of Transport, 1113 Sofia, Bulgaria;
| | - Ivan Milenov
- Faculty of Telecommunication and Electrical Equipment in Transport, Todor Kableshkov University of Transport, 1113 Sofia, Bulgaria;
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18
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Lacerda LHS, de Lazaro SR. Density Functional Theory investigation of rhombohedral multiferroic oxides for photocatalytic water splitting and organic photodegradation. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112656] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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19
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Kühne IA, Barker A, Zhang F, Stamenov P, O'Doherty O, Müller-Bunz H, Stein M, Rodriguez BJ, Morgan GG. Modulation of Jahn-Teller distortion and electromechanical response in a Mn 3+spin crossover complex. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 32:404002. [PMID: 32208375 DOI: 10.1088/1361-648x/ab82d1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 03/24/2020] [Indexed: 06/10/2023]
Abstract
Structural, magnetic and electromechanical changes resulting from spin crossover between the spin quintet and spin triplet forms of a mononuclear Mn3+complex embedded in six lattices with different charge balancing counterions are reported. Isostructural ClO4-and BF4-salts (1) and (2) each have two unique Mn3+sites which follow different thermal evolution pathways resulting in a crossover from the spin quintet form at room temperature to a 1:1 spin triplet:quintet ratio below 150 K. The PF6-(3) and NO3-(4) salts which each have one unique Mn3+site show a complete conversion from spin quintet to spin triplet over the same temperature range. A complete two step spin crossover is observed in the CF3SO3-lattice (5) with a 1:1 ratio of spin quintet and spin triplet forms at intermediate temperature, while the BPh4-lattice (6) stabilizes the spin triplet form over most of the temperature range with gradual and incomplete spin state switching above 250 K. An electromechanical piezoresponse was detected in NO3-complex4despite crystallization in a centrosymmetric space group. The role of deformations associated with stress-induced spin triplet-spin quintet switching in breaking the local symmetry are discussed and computational analysis is used to estimate the energy gap between the two spin states.
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Affiliation(s)
- Irina A Kühne
- School of Chemistry, University College Dublin (UCD), Dublin, Ireland
| | - Andrew Barker
- School of Chemistry, University College Dublin (UCD), Dublin, Ireland
| | - Fengyuan Zhang
- School of Physics and Conway Institute of Biomolecular and Biomedical Research, University College Dublin (UCD), Dublin, Ireland
| | - Plamen Stamenov
- School of Physics, Trinity College Dublin (TCD), Dublin, Ireland
| | - Oisín O'Doherty
- School of Chemistry, University College Dublin (UCD), Dublin, Ireland
| | - Helge Müller-Bunz
- School of Chemistry, University College Dublin (UCD), Dublin, Ireland
| | - Matthias Stein
- Max Planck Institute for Dynamics of Complex Technical Systems, Molecular Simulations and Design Group, Sandtorstrasse 1, 39106 Magdeburg, Germany
| | - Brian J Rodriguez
- School of Physics and Conway Institute of Biomolecular and Biomedical Research, University College Dublin (UCD), Dublin, Ireland
| | - Grace G Morgan
- School of Chemistry, University College Dublin (UCD), Dublin, Ireland
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20
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Zheng Y, Wu X, Zhang Y, Shao W, Ye W. Electron diffraction study of the space group of Bi 5Ti 3FeO 15 multiferroic ceramic. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2020; 76:454-457. [PMID: 32367826 DOI: 10.1107/s2053229620005045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 04/09/2020] [Indexed: 11/10/2022]
Abstract
Bi5Ti3FeO15 (pentabismuth trititanium iron pentadecaoxide), which is a multiferroic four-layer Aurivillius phase compound, has received much attention in recent years. However, three mutually inconsistent orthorhombic space groups, i.e. A21am, Fmm2 and Pnn2, have been reported for the room-temperature phase of Bi5Ti3FeO15 by X-ray and neutron diffraction investigations. Here, electron diffraction results are presented and discussed for the first time to unambiguously clarify the room-temperature space group of ceramic Bi5Ti3FeO15. It has been found that all the observed reflections from the ceramic agree with those expected in A21am, while the observed reflections 011, 013 and 015 should be forbidden in the case of Fmm2, and no 107 and 109 reflections were observed although allowed for Pnn2. The present study has demonstrated that the space group of Bi5Ti3FeO15 ceramic is A21am rather than Fmm2 or Pnn2, an identification that proved to be a challenge for X-ray diffraction. On the basis of the space group A21am, the lattice parameters of the Bi5Ti3FeO15 ceramic were calculated from its X-ray diffraction data.
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Affiliation(s)
- Ying Zheng
- College of Physics, Qingdao University, Ningxia Road 308, Qingdao, Shandong 266071, People's Republic of China
| | - Xinyan Wu
- College of Electrical Engineering, Qingdao University, Ningxia Road 308, Qingdao, Shandong 266071, People's Republic of China
| | - Yongcheng Zhang
- College of Physics, Qingdao University, Ningxia Road 308, Qingdao, Shandong 266071, People's Republic of China
| | - Weiquan Shao
- College of Physics, Qingdao University, Ningxia Road 308, Qingdao, Shandong 266071, People's Republic of China
| | - Wanneng Ye
- College of Physics, Qingdao University, Ningxia Road 308, Qingdao, Shandong 266071, People's Republic of China
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21
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Jayachandran KP, Guedes JM, Rodrigues HC. Homogenization method for microscopic characterization of the composite magnetoelectric multiferroics. Sci Rep 2020; 10:1276. [PMID: 31992781 PMCID: PMC6987106 DOI: 10.1038/s41598-020-57977-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 01/09/2020] [Indexed: 11/09/2022] Open
Abstract
Tuning of magnetization or electrical polarization using external fields other than their corresponding conjugate fields (i.e., magnetic field for the former or electric field for the latter response) attracts renewed interest due to its potential for applications. The magnetoelectric effect in multiferroic 1-3 composite composed of alternating magnetic and ferroelectric layers operating in linear regime consequent to external biasing fields is simulated and analysed theoretically. Two-scale homogenization procedure to arrive at the equilibrium overall physical properties of magnetoelectric multiferroic composite is formulated using variational analysis. This procedure is extended to quantify the underlying local (microscopic) electric, magnetic and elastic fields and thereby compute local distribution of stresses and strains, electrical and magnetic potentials, the electric and magnetic fields as well as the equivalent von Mises stresses. The computational model is implemented by modifying the software POSTMAT (material postprocessing). Computed local stress/strain profiles and the von Mises stresses consequent to biasing electrical and magnetic fields provide insightful information related to the magnetostriction and the ensuing electrical and magnetic polarization. Average polarization and magnetization against magnetic and electric fields respectively are computed and found to be in reasonable limits of the experimental results on similar composite systems. The homogenization model covers multiferroics and its composites regardless of crystallographic symmetry (with the caveat of assuming an ideal and semi-coherent interface connecting the constituent phases) and offer computational efficiency besides unveiling the nature of the underlying microscopic field characteristics.
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Affiliation(s)
- K P Jayachandran
- IDMEC, Iinstituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal.
| | - J M Guedes
- IDMEC, Iinstituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
| | - H C Rodrigues
- IDMEC, Iinstituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
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22
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Kinetics, Isotherm, Thermodynamics, and Recyclability of Exfoliated Graphene-Decorated MnFe 2O 4 Nanocomposite Towards Congo Red Dye. J CHEM-NY 2019. [DOI: 10.1155/2019/5234585] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Herein, we described the use of exfoliated graphene- (EG-) decorated magnetic MnFe2O4 nanocomposite (EG@MnFe2O4) for the removal and adsorption of Congo red (CR) dye from wastewater. Firstly, the precursors (EG, MnFe2O4) and EG@MnFe2O4 were fabricated, characterized using several physical analytical techniques such as X-ray powder diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), and N2adsorption/desorption isotherm measurement. For the adsorption experiments, the effect of contact time (0–240 min), concentration (10–60 mg/L), solution pH (2–10), adsorbent dosage (0.03–0.07 g), and temperature (283–313 K) was rigorously studied. To elucidate the adsorption mechanism and behaviour of CR over EG@MnFe2O4 and MnFe2O4 adsorbents, the kinetic models (pseudo-first-order, pseudo-second-order, Elovich, and Bangham) and isotherm models (Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich) have been adopted. The kinetic results indicated that models adhered to the pseudo-second-order equation, exhibiting the chemisorption mechanism in heterogeneous phrase. Meanwhile, the isotherm results revealed the adsorption of CR over EG@MnFe2O4 obeyed the monolayer behaviour (Langmuir model) rather than multilayer behaviour (Freundlich equation) over MnFe2O4. The thermodynamic study also suggested that such adsorption was an endothermic and spontaneous process. With high maximum adsorption capacity (71.79 mg/g) and good recyclability (at least 4 times), EG@MnFe2O4 can be a potential alternative for the adsorptive removal of CR dye from water.
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23
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Sethi A, Slimak JE, Kolodiazhnyi T, Cooper SL. Emergent Vibronic Excitations in the Magnetodielectric Regime of Ce_{2}O_{3}. PHYSICAL REVIEW LETTERS 2019; 122:177601. [PMID: 31107079 DOI: 10.1103/physrevlett.122.177601] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 03/01/2019] [Indexed: 06/09/2023]
Abstract
The strong coupling between spin, lattice, and electronic degrees of freedom in magnetic materials can produce interesting phenomena, including multiferroic and magnetodielectric (MD) behavior, and exotic coupled excitations, such as electromagnons. We present a temperature- and magnetic field-dependent inelastic light (Raman) scattering study that reveals the emergence of vibronic modes, i.e., coupled vibrational and crystal-electric-field (CEF) electronic excitations, in the unconventional rare-earth MD material Ce_{2}O_{3}. The energies and intensities of these emergent vibronic modes are indicative of enhanced vibronic coupling and increased modulation of the dielectric susceptibility in the Néel state (T_{N}≈6.2 K). The field dependences of the energies and intensities of these vibronic modes are consistent with a decrease of both the vibronic coupling and the dielectric fluctuations associated with these modes below T_{N}. These results suggest a distinctive mechanism for MD behavior in Ce_{2}O_{3} that is associated with a field-tunable coupling between CEF and phonon states.
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Affiliation(s)
- A Sethi
- Department of Physics and Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801, USA
| | - J E Slimak
- Department of Physics and Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801, USA
| | - T Kolodiazhnyi
- National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - S L Cooper
- Department of Physics and Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801, USA
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24
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Sayedaghaee SO, Xu B, Prosandeev S, Paillard C, Bellaiche L. Novel Dynamical Magnetoelectric Effects in Multiferroic BiFeO_{3}. PHYSICAL REVIEW LETTERS 2019; 122:097601. [PMID: 30932533 DOI: 10.1103/physrevlett.122.097601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 01/19/2019] [Indexed: 06/09/2023]
Abstract
An atomistic effective Hamiltonian scheme is employed within molecular dynamics simulations to investigate how the electrical polarization and magnetization of the multiferroic BiFeO_{3} respond to time-dependent ac magnetic fields of various frequencies, as well as to reveal the frequency dependency of the dynamical (quadratic) magnetoelectric coefficient. We found the occurrence of vibrations having phonon frequencies in both the time dependency of the electrical polarization and magnetization (for any applied ac frequency), therefore making such vibrations of electromagnonic nature, when the homogeneous strain of the system is frozen (case 1). Moreover, the quadratic magnetoelectric coupling constant is monotonic and almost dispersionless in the sub-THz range in this case 1. In contrast, when the homogeneous strain can fully relax (case 2), two additional low-frequency and strain-mediated oscillations emerge in the time-dependent behavior of the polarization and magnetization, which result in resonances in the quadratic magnetoelectric coefficient. Such additional oscillations consist of a mixing between acoustic phonons, optical phonons, and magnons, and reflect the existence of a new quasiparticle that can be coined an "electroacoustic magnon." This latter finding can prompt experimentalists to shape their samples to take advantage of, and tune, the magnetostrictive-induced mechanical resonance frequency, in order to achieve large dynamical magnetoelectric couplings.
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Affiliation(s)
- S Omid Sayedaghaee
- Physics Department and Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA
- Microelectronics-Photonics Program, University of Arkansas, Fayetteville, Arkansas 72701, USA
| | - Bin Xu
- Physics Department and Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA
- School of Physical Science and Technology, Soochow University, Suzhou, Jiangsu 215006, China
| | - Sergey Prosandeev
- Physics Department and Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA
- Institute of Physics and Physics Department of Southern Federal University, Rostov-na-Donu 344090, Russia
| | - Charles Paillard
- Physics Department and Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA
- Laboratoire Structures, Propriétés et Modélisation des Solides, CentraleSupélec, CNRS UMR 8580, Université Paris-Saclay, 91190 Gif-sur-Yvette, France
| | - L Bellaiche
- Physics Department and Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA
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25
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Pronounced and reversible modulation of the piezoelectric coefficients by a low magnetic field in a magnetoelectric PZT-5%Fe 3O 4 system. Sci Rep 2019; 9:2178. [PMID: 30778121 PMCID: PMC6379417 DOI: 10.1038/s41598-019-38675-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 11/11/2018] [Indexed: 12/02/2022] Open
Abstract
Composite magnetoelectric compounds that combine ferroelectricity/piezoelectricity and ferromagnetism/magnetostriction are investigated intensively for room-temperature applications. Here, we studied bulk composites of a magnetostrictive constituent, ferromagnetic Fe3O4 nanoparticles, homogeneously embedded in a ferroelectric/piezoelectric matrix, Pb(Zr0.52Ti0.48)O3 (PZT). Specifically, we focused on PZT-5%Fe3O4 samples which are strongly insulating and thus sustain a relatively high out-of-plane external electric field, Eex,z. The in-plane strain-electric field curve (S(Eex,z)) was carefully recorded upon successive application and removal of an out-of-plane external magnetic field, Hex,z. The obtained S(Eex,z) data exhibited two main features. First, the respective in-plane piezoelectric coefficients, d(Eex,z) = 200–250 pm/V, show a dramatic decrease, 50–60%, upon application of a relatively low Hex,z = 1 kOe. Second, the process is completely reversible since the initial value of d(Eex,z) is recovered upon removal of Hex,z. Polarization data, P(Eex,z), evidenced that the Fe3O4 nanoparticles introduced static structural disorder that made PZT harder. Taken together, these results prove that the Fe3O4 nanoparticles, except for static structural disorder, introduce reconfigurable magnetic disorder that modifies the in-plane S(Eex,z) curve and the accompanying d(Eex,z) of PZT when an external magnetic field is applied at will. The room-temperature feasibility of these findings renders the PZT-x%Fe3O4 system a solid basis for the development of magnetic-field-controlled PE devices.
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Jedrecy N, Aghavnian T, Moussy JB, Magnan H, Stanescu D, Portier X, Arrio MA, Mocuta C, Vlad A, Belkhou R, Ohresser P, Barbier A. Cross-Correlation between Strain, Ferroelectricity, and Ferromagnetism in Epitaxial Multiferroic CoFe 2O 4/BaTiO 3 Heterostructures. ACS APPLIED MATERIALS & INTERFACES 2018; 10:28003-28014. [PMID: 30085643 DOI: 10.1021/acsami.8b09499] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Multiferroic biphase systems with robust ferromagnetic and ferroelectric response at room temperature would be ideally suitable for voltage-controlled nonvolatile memories. Understanding the role of strain and charges at interfaces is central for an accurate control of the ferroelectricity as well as of the ferromagnetism. In this paper, we probe the relationship between the strain and the ferromagnetic/ferroelectric properties in the layered CoFe2O4/BaTiO3 (CFO/BTO) model system. For this purpose, ultrathin epitaxial bilayers, ranging from highly strained to fully relaxed, were grown by molecular beam epitaxy on Nb:SrTiO3(001). The lattice characteristics, determined by X-ray diffraction, evidence a non-intuitive cross-correlation: the strain in the bottom BTO layer depends on the thickness of the top CFO layer and vice versa. Plastic deformation participates in the relaxation process through dislocations at both interfaces, revealed by electron microscopy. Importantly, the switching of the BTO ferroelectric polarization, probed by piezoresponse force microscopy, is found dependent on the CFO thickness: the larger is the latter, the easiest is the BTO switching. In the thinnest thickness regime, the tetragonality of BTO and CFO has a strong impact on the 3d electronic levels of the different cations, which were probed by X-ray linear dichroism. The quantitative determination of the nature and repartition of the magnetic ions in CFO, as well as of their magnetic moments, has been carried out by X-ray magnetic circular dichroism, with the support of multiplet calculations. While bulklike ferrimagnetism is found for 5-15 nm thick CFO layers with a magnetization resulting as expected from the Co2+ ions alone, important changes occur at the interface with BTO over a thickness of 2-3 nm because of the formation of Fe2+ and Co3+ ions. This oxidoreduction process at the interface has strong implications concerning the mechanisms of polarity compensation and coupling in multiferroic heterostructures.
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Affiliation(s)
- Nathalie Jedrecy
- Institut des Nano Sciences de Paris (INSP) , Sorbonne Université, CNRS UMR 7588 , 4 Place Jussieu , 75252 Paris Cedex 05 , France
| | - Thomas Aghavnian
- Service de Physique de l'Etat Condensé (SPEC), CEA, CNRS UMR 3680, Université Paris Saclay, Orme des Merisiers, CEA Saclay , 91191 Gif sur Yvette Cedex , France
| | - Jean-Baptiste Moussy
- Service de Physique de l'Etat Condensé (SPEC), CEA, CNRS UMR 3680, Université Paris Saclay, Orme des Merisiers, CEA Saclay , 91191 Gif sur Yvette Cedex , France
| | - Hélène Magnan
- Service de Physique de l'Etat Condensé (SPEC), CEA, CNRS UMR 3680, Université Paris Saclay, Orme des Merisiers, CEA Saclay , 91191 Gif sur Yvette Cedex , France
| | - Dana Stanescu
- Service de Physique de l'Etat Condensé (SPEC), CEA, CNRS UMR 3680, Université Paris Saclay, Orme des Merisiers, CEA Saclay , 91191 Gif sur Yvette Cedex , France
| | - Xavier Portier
- Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP), CEA, CNRS UMR 6252, ENSICAEN, Normandie Université , 6 Boulevard Maréchal Juin , 14050 Caen , France
| | - Marie-Anne Arrio
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Université, CNRS UMR 7590, IRD, MNHN , 4 Place Jussieu , 75252 Paris Cedex 05 , France
| | - Cristian Mocuta
- Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin , BP 48, 91192 Gif sur Yvette Cedex , France
| | - Alina Vlad
- Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin , BP 48, 91192 Gif sur Yvette Cedex , France
| | - Rachid Belkhou
- Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin , BP 48, 91192 Gif sur Yvette Cedex , France
| | - Philippe Ohresser
- Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin , BP 48, 91192 Gif sur Yvette Cedex , France
| | - Antoine Barbier
- Service de Physique de l'Etat Condensé (SPEC), CEA, CNRS UMR 3680, Université Paris Saclay, Orme des Merisiers, CEA Saclay , 91191 Gif sur Yvette Cedex , France
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27
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First-principles analysis of ferroelectric transition in MnSnO3 and MnTiO3 perovskites. J SOLID STATE CHEM 2018. [DOI: 10.1016/j.jssc.2018.03.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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28
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Wu R, Kursumovic A, Gao X, Yun C, Vickers ME, Wang H, Cho S, MacManus-Driscoll JL. Design of a Vertical Composite Thin Film System with Ultralow Leakage To Yield Large Converse Magnetoelectric Effect. ACS APPLIED MATERIALS & INTERFACES 2018; 10:18237-18245. [PMID: 29732880 DOI: 10.1021/acsami.8b03837] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Electric field control of magnetism is a critical future technology for low-power, ultrahigh density memory. However, despite intensive research efforts, no practical material systems have emerged. Interface-coupled, composite systems containing ferroelectric and ferri-/ferromagnetic elements have been widely explored, but they have a range of problems, for example, substrate clamping, large leakage, and inability to miniaturize. In this work, through careful material selection, design, and nanoengineering, a high-performance room-temperature magnetoelectric system is demonstrated. The clamping problem is overcome by using a vertically aligned nanocomposite structure in which the strain coupling is independent of the substrate. To overcome the leakage problem, three key novel advances are introduced: a low leakage ferroelectric, Na0.5Bi0.5TiO3; ferroelectric-ferrimagnetic vertical interfaces which are not conducting; and current blockage via a rectifying interface between the film and the Nb-doped SrTiO3 substrate. The new multiferroic nanocomposite (Na0.5Bi0.5TiO3-CoFe2O4) thin-film system enables, for the first time, large-scale in situ electric field control of magnetic anisotropy at room temperature in a system applicable for magnetoelectric random access memory, with a magnetoelectric coefficient of 1.25 × 10-9 s m-1.
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Affiliation(s)
- Rui Wu
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , United Kingdom
| | - Ahmed Kursumovic
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , United Kingdom
| | - Xingyao Gao
- Materials Engineering , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Chao Yun
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , United Kingdom
| | - Mary E Vickers
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , United Kingdom
| | - Haiyan Wang
- Materials Engineering , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Seungho Cho
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , United Kingdom
| | - Judith L MacManus-Driscoll
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , United Kingdom
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29
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Palneedi H, Maurya D, Geng LD, Song HC, Hwang GT, Peddigari M, Annapureddy V, Song K, Oh YS, Yang SC, Wang YU, Priya S, Ryu J. Enhanced Self-Biased Magnetoelectric Coupling in Laser-Annealed Pb(Zr,Ti)O 3 Thick Film Deposited on Ni Foil. ACS APPLIED MATERIALS & INTERFACES 2018; 10:11018-11025. [PMID: 29309126 DOI: 10.1021/acsami.7b16706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Enhanced and self-biased magnetoelectric (ME) coupling is demonstrated in a laminate heterostructure comprising 4 μm-thick Pb(Zr,Ti)O3 (PZT) film deposited on 50 μm-thick flexible nickel (Ni) foil. A unique fabrication approach, combining room temperature deposition of PZT film by granule spray in vacuum (GSV) process and localized thermal treatment of the film by laser radiation, is utilized. This approach addresses the challenges in integrating ceramic films on metal substrates, which is often limited by the interfacial chemical reactions occurring at high processing temperatures. Laser-induced crystallinity improvement in the PZT thick film led to enhanced dielectric, ferroelectric, and magnetoelectric properties of the PZT/Ni composite. A high self-biased ME response on the order of 3.15 V/cm·Oe was obtained from the laser-annealed PZT/Ni film heterostructure. This value corresponds to a ∼2000% increment from the ME response (0.16 V/cm·Oe) measured from the as-deposited PZT/Ni sample. This result is also one of the highest reported values among similar ME composite systems. The tunability of self-biased ME coupling in PZT/Ni composite has been found to be related to the demagnetization field in Ni, strain mismatch between PZT and Ni, and flexural moment of the laminate structure. The phase-field model provides quantitative insight into these factors and illustrates their contributions toward the observed self-biased ME response. The results present a viable pathway toward designing and integrating ME components for a new generation of miniaturized tunable electronic devices.
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Affiliation(s)
- Haribabu Palneedi
- Functional Ceramics Group , Korea Institute of Materials Science (KIMS) , Changwon 51508 , Korea
| | - Deepam Maurya
- Bio-inspired Materials and Devices Laboratory (BMDL), Center for Energy Harvesting Materials and Systems (CEHMS) , Virginia Tech , Blacksburg , Virginia 24061 , United States
| | - Liwei D Geng
- Department of Materials Science and Engineering , Michigan Technological University , Houghton , Michigan 49931 , United States
| | - Hyun-Cheol Song
- Bio-inspired Materials and Devices Laboratory (BMDL), Center for Energy Harvesting Materials and Systems (CEHMS) , Virginia Tech , Blacksburg , Virginia 24061 , United States
- Center for Electronic Materials , Korea Institute of Science and Technology (KIST) , Seoul 02792 , Korea
| | - Geon-Tae Hwang
- Functional Ceramics Group , Korea Institute of Materials Science (KIMS) , Changwon 51508 , Korea
| | - Mahesh Peddigari
- Functional Ceramics Group , Korea Institute of Materials Science (KIMS) , Changwon 51508 , Korea
| | | | - Kyung Song
- Department of Materials Modeling and Characterization , Korea Institute of Materials Science (KIMS) , Changwon 51508 , Korea
| | - Yoon Seok Oh
- Department of Physics , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Korea
| | - Su-Chul Yang
- Department of Chemical Engineering , Dong-A University , Busan 49315 , Korea
| | - Yu U Wang
- Department of Materials Science and Engineering , Michigan Technological University , Houghton , Michigan 49931 , United States
| | - Shashank Priya
- Bio-inspired Materials and Devices Laboratory (BMDL), Center for Energy Harvesting Materials and Systems (CEHMS) , Virginia Tech , Blacksburg , Virginia 24061 , United States
| | - Jungho Ryu
- Functional Ceramics Group , Korea Institute of Materials Science (KIMS) , Changwon 51508 , Korea
- School of Materials Science and Engineering , Yeungnam University , Gyeongsan 38541 , Korea
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30
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Jayachandran KP, Guedes JM, Rodrigues HC. Solutions for maximum coupling in multiferroic magnetoelectric composites by material design. Sci Rep 2018; 8:4866. [PMID: 29559656 PMCID: PMC5861126 DOI: 10.1038/s41598-018-22964-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Accepted: 03/05/2018] [Indexed: 11/09/2022] Open
Abstract
Electrical control of magnetization offers an extra degree of freedom in materials possessing both electric and magnetic dipole moments. A stochastic optimization combined with homogenization is applied for the solution for maximum magnetoelectric (ME) coupling coefficient α of a laminar ME composite with the thickness and orientation of ferroelectric phase as design variables. Simulated annealing with a generalized Monte Carlo scheme is used for optimization problem. Optimal microstructure with single and poly-crystalline configurations that enhances the overall α is identified. It is found that juxtaposing a preferentially oriented ferroelectric material with a ferromagnetic ferrite into a composite would result in manifold increase in magnetoelectric coupling. The interface shear strains are found to be richly contributing to the ME coupling. The preferential orientation of the ferroelectric phase in the optimal ME composite laminate is demonstrated using the optimal pole figure analyses.
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Affiliation(s)
- K P Jayachandran
- IDMEC, Instituto Superior Técnico, University of Lisbon, Av. Rovisco Pais, 1049-001, Lisbon, Portugal.
| | - J M Guedes
- IDMEC, Instituto Superior Técnico, University of Lisbon, Av. Rovisco Pais, 1049-001, Lisbon, Portugal
| | - H C Rodrigues
- IDMEC, Instituto Superior Técnico, University of Lisbon, Av. Rovisco Pais, 1049-001, Lisbon, Portugal
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31
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Abstract
By means of symmetry analysis, density functional theory calculations, and Monte Carlo simulations we show that goethite, α-FeOOH, is a linear magnetoelectric below its Néel temperature T N = 400 K. The experimentally observed magnetic field induced spin-flop phase transition results in either change of direction of electric polarization or its suppression. Estimated value of magnetoelectric coefficient is 0.57 μC · m-2 · T-1. The abundance of goethite in nature makes it arguably the most widespread magnetoelectric material.
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32
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Insights into the Performance of Magnetoelectric Ceramic Layered Composites. JOURNAL OF COMPOSITES SCIENCE 2017. [DOI: 10.3390/jcs1020014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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33
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Fina I, Quintana A, Padilla-Pantoja J, Martí X, Macià F, Sánchez F, Foerster M, Aballe L, Fontcuberta J, Sort J. Electric-Field-Adjustable Time-Dependent Magnetoelectric Response in Martensitic FeRh Alloy. ACS APPLIED MATERIALS & INTERFACES 2017; 9:15577-15582. [PMID: 28429588 DOI: 10.1021/acsami.7b00476] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Steady or dynamic magnetoelectric response, selectable and adjustable by only varying the amplitude of the applied electric field, is found in a multiferroic FeRh/PMN-PT device. In-operando time-dependent structural, ferroelectric, and magnetoelectric characterizations provide evidence that, as in magnetic shape memory martensitic alloys, the observed distinctive magnetoelectric responses are related to the time-dependent relative abundance of antiferromagnetic-ferromagnetic phases in FeRh, unbalanced by voltage-controlled strain. This flexible magnetoelectric response can be exploited not only for energy-efficient memory operations but also in other applications, where multilevel and/or transient responses are required.
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Affiliation(s)
- Ignasi Fina
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) , Campus UAB, Bellaterra, E-08193 Barcelona, Spain
| | - Alberto Quintana
- Departament de Física, Universitat Autònoma de Barcelona , Bellaterra, E-08193 Barcelona, Spain
| | - Jessica Padilla-Pantoja
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology , Campus UAB, Bellaterra, E-08193 Barcelona, Spain
| | - Xavier Martí
- Institute of Physics, Academy of Sciences of the Czech Republic , Cukrovarnická 10, 162 53 Praha 6, Czech Republic
| | - Ferran Macià
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) , Campus UAB, Bellaterra, E-08193 Barcelona, Spain
| | - Florencio Sánchez
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) , Campus UAB, Bellaterra, E-08193 Barcelona, Spain
| | - Michael Foerster
- ALBA Synchrotron Light Facility , Carrer de la Llum 2-26, Cerdanyola del Vallès, 08290 Barcelona, Spain
| | - Lucia Aballe
- ALBA Synchrotron Light Facility , Carrer de la Llum 2-26, Cerdanyola del Vallès, 08290 Barcelona, Spain
| | - Josep Fontcuberta
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) , Campus UAB, Bellaterra, E-08193 Barcelona, Spain
| | - Jordi Sort
- Departament de Física, Universitat Autònoma de Barcelona , Bellaterra, E-08193 Barcelona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA) , Pg. Lluís Companys 23, E-08010 Barcelona, Spain
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High Curie temperature and enhanced magnetoelectric properties of the laminated Li 0.058(Na 0.535K 0.48) 0.942NbO 3/Co 0.6 Zn 0.4Fe 1.7Mn 0.3O 4 composites. Sci Rep 2017; 7:44855. [PMID: 28338006 PMCID: PMC5364461 DOI: 10.1038/srep44855] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 02/14/2017] [Indexed: 11/08/2022] Open
Abstract
Laminated magnetoelectric composites of Li0.058(Na0.535K0.48)0.942NbO3 (LKNN)/Co0.6Zn0.4Fe1.7Mn0.3O4 (CZFM) prepared by the conventional solid-state sintering method were investigated for their dielectric, magnetic, and magnetoelectric properties. The microstructure of the laminated composites indicates that the LKNN phase and CZFM phase can coexist in the composites. Compared with the particulate magnetoelectric composites, the laminated composites have better piezoelectric and magnetoelectric properties due to their higher resistances and lower leakage currents. The magnetoelectric behaviors lie on the relative mass ratio of LKNN phase and CZFM phase. The laminated composites possess a high Curie temperature (TC) of 463 °C, and the largest ME coefficient of 285 mV/cm Oe, which is the highest value for the lead-free bulk ceramic magnetoelectric composites so far.
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35
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Erdem D, Bingham NS, Heiligtag FJ, Pilet N, Warnicke P, Vaz CAF, Shi Y, Buzzi M, Rupp JLM, Heyderman LJ, Niederberger M. Nanoparticle-Based Magnetoelectric BaTiO 3-CoFe 2O 4 Thin Film Heterostructures for Voltage Control of Magnetism. ACS NANO 2016; 10:9840-9851. [PMID: 27704780 DOI: 10.1021/acsnano.6b05469] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Multiferroic composite materials combining ferroelectric and ferromagnetic order at room temperature have great potential for emerging applications such as four-state memories, magnetoelectric sensors, and microwave devices. In this paper, we report an effective and facile liquid phase deposition route to create multiferroic composite thin films involving the spin-coating of nanoparticle dispersions of BaTiO3, a well-known ferroelectric, and CoFe2O4, a highly magnetostrictive material. This approach offers great flexibility in terms of accessible film configurations (co-dispersed as well as layered films), thicknesses (from 100 nm to several μm) and composition (5-50 wt % CoFe2O4 with respect to BaTiO3) to address various potential applications. A detailed structural characterization proves that BaTiO3 and CoFe2O4 remain phase-separated with clear interfaces on the nanoscale after heat treatment, while electrical and magnetic studies indicate the simultaneous presence of both ferroelectric and ferromagnetic order. Furthermore, coupling between these orders within the films is demonstrated with voltage control of the magnetism at ambient temperatures.
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Affiliation(s)
- Derya Erdem
- Laboratory for Multifunctional Materials, Department of Materials, ETH Zurich , Vladimir-Prelog-Weg 5, 8093, Zurich, Switzerland
| | | | - Florian J Heiligtag
- Laboratory for Multifunctional Materials, Department of Materials, ETH Zurich , Vladimir-Prelog-Weg 5, 8093, Zurich, Switzerland
| | | | | | | | | | | | | | | | - Markus Niederberger
- Laboratory for Multifunctional Materials, Department of Materials, ETH Zurich , Vladimir-Prelog-Weg 5, 8093, Zurich, Switzerland
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36
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Jeon IR, Sun L, Negru B, Van Duyne RP, Dincă M, Harris TD. Solid-State Redox Switching of Magnetic Exchange and Electronic Conductivity in a Benzoquinoid-Bridged MnII Chain Compound. J Am Chem Soc 2016; 138:6583-90. [DOI: 10.1021/jacs.6b02485] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ie-Rang Jeon
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Lei Sun
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, United States
| | - Bogdan Negru
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Richard P. Van Duyne
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Mircea Dincă
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, United States
| | - T. David Harris
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
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37
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Vaz CAF, Staub U. Magnetoelectronics--electric field control of magnetism in the solid state. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2015; 27:500301. [PMID: 26613520 DOI: 10.1088/0953-8984/27/50/500301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- C A F Vaz
- Swiss Light Source, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland
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