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Wang W, Liu F, Zhang X, Shen X, Yao Y, Wang Y, Liu B, Liu X, Yu R. Two types of B-site ordered structures of the double perovskite Y2CrMnO6: experimental identification and first-principles study. Inorg Chem Front 2018. [DOI: 10.1039/c7qi00686a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
From the ABF images, first-principles calculations and image simulations, we conclude that Y2CrMnO6 has rock-salt ordered and layer ordered structures.
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Affiliation(s)
- Weipeng Wang
- Beijing National Laboratory of Condensed Matter Physics
- Institute of Physics
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Fuyang Liu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Xuejing Zhang
- Beijing National Laboratory of Condensed Matter Physics
- Institute of Physics
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Xi Shen
- Beijing National Laboratory of Condensed Matter Physics
- Institute of Physics
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Yuan Yao
- Beijing National Laboratory of Condensed Matter Physics
- Institute of Physics
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Yanguo Wang
- Beijing National Laboratory of Condensed Matter Physics
- Institute of Physics
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Banggui Liu
- Beijing National Laboratory of Condensed Matter Physics
- Institute of Physics
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Xiaoyang Liu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Richeng Yu
- Beijing National Laboratory of Condensed Matter Physics
- Institute of Physics
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
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2
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Tuning the multiferroic mechanisms of TbMnO 3 by epitaxial strain. Sci Rep 2017; 7:44753. [PMID: 28317838 PMCID: PMC5357786 DOI: 10.1038/srep44753] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 02/13/2017] [Indexed: 11/09/2022] Open
Abstract
A current challenge in the field of magnetoelectric multiferroics is to identify systems that allow a controlled tuning of states displaying distinct magnetoelectric responses. Here we show that the multiferroic ground state of the archetypal multiferroic TbMnO3 is dramatically modified by epitaxial strain. Neutron diffraction reveals that in highly strained films the magnetic order changes from the bulk-like incommensurate bc-cycloidal structure to commensurate magnetic order. Concomitant with the modification of the magnetic ground state, optical second-harmonic generation (SHG) and electric measurements show an enormous increase of the ferroelectric polarization, and a change in its direction from along the c- to the a-axis. Our results suggest that the drastic change of multiferroic properties results from a switch of the spin-current magnetoelectric coupling in bulk TbMnO3 to symmetric magnetostriction in epitaxially-strained TbMnO3. These findings experimentally demonstrate that epitaxial strain can be used to control single-phase spin-driven multiferroic states.
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Zheng D, Jin C, Li P, Wang L, Feng L, Mi W, Bai H. Orbital Reconstruction Enhanced Exchange Bias in La0.6Sr0.4MnO3/Orthorhombic YMnO3 Heterostructures. Sci Rep 2016; 6:24568. [PMID: 27090614 PMCID: PMC4836304 DOI: 10.1038/srep24568] [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: 10/01/2015] [Accepted: 03/29/2016] [Indexed: 11/12/2022] Open
Abstract
The exchange bias in ferromagnetic/multiferroic heterostructures is usually considered to originate from interfacial coupling. In this work, an orbital reconstruction enhanced exchange bias was discovered. As La0.6Sr0.4MnO3 (LSMO) grown on YMnO3 (YMO) suffers a tensile strain (a > c), the doubly degenerate eg orbital splits into high energy 3z2 − r2 and low energy x2 − y2 orbitals, which makes electrons occupy the localized x2 − y2 orbital and leads to the formation of antiferromagnetic phase in LSMO. The orbital reconstruction induced antiferromagnetic phase enhances the exchange bias in the LSMO/YMO heterostructures, lightening an effective way for electric-field modulated magnetic moments in multiferroic magnetoelectric devices.
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Affiliation(s)
- Dongxing Zheng
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparation Technology, Institute of Advanced Materials Physics, Faculty of Science, Tianjin University, Tianjin 300072, China
| | - Chao Jin
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparation Technology, Institute of Advanced Materials Physics, Faculty of Science, Tianjin University, Tianjin 300072, China
| | - Peng Li
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparation Technology, Institute of Advanced Materials Physics, Faculty of Science, Tianjin University, Tianjin 300072, China
| | - Liyan Wang
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparation Technology, Institute of Advanced Materials Physics, Faculty of Science, Tianjin University, Tianjin 300072, China
| | - Liefeng Feng
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparation Technology, Institute of Advanced Materials Physics, Faculty of Science, Tianjin University, Tianjin 300072, China
| | - Wenbo Mi
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparation Technology, Institute of Advanced Materials Physics, Faculty of Science, Tianjin University, Tianjin 300072, China
| | - Haili Bai
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparation Technology, Institute of Advanced Materials Physics, Faculty of Science, Tianjin University, Tianjin 300072, China
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Chai JS, Tian H, Mao AJ, Deng LJ, Kuang XY. Pressure effect on the properties of magnetic moments and phase transitions in YMnO 3 from first principles. RSC Adv 2016. [DOI: 10.1039/c6ra08539c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report the properties of magnetic, electronic, phonon frequencies and magnetic phase transitions in orthorhombic perovskite YMnO3 by means of first-principles calculations.
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Affiliation(s)
- Jun-Shuai Chai
- Institute of Atomic and Molecular Physics
- Sichuan University
- Chengdu 610065
- China
| | - Hao Tian
- Institute of Atomic and Molecular Physics
- Sichuan University
- Chengdu 610065
- China
| | - Ai-Jie Mao
- Institute of Atomic and Molecular Physics
- Sichuan University
- Chengdu 610065
- China
| | - Li-Juan Deng
- Institute of Atomic and Molecular Physics
- Sichuan University
- Chengdu 610065
- China
| | - Xiao-Yu Kuang
- Institute of Atomic and Molecular Physics
- Sichuan University
- Chengdu 610065
- China
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5
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Ortega N, Kumar A, Scott JF, Katiyar RS. Multifunctional magnetoelectric materials for device applications. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2015; 27:504002. [PMID: 26613287 DOI: 10.1088/0953-8984/27/50/504002] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Over the past decade magnetoelectric (ME) mutiferroic (MF) materials and their devices are one of the highest priority research topics that has been investigated by the scientific ferroics community to develop the next generation of novel multifunctional materials. These systems show the simultaneous existence of two or more ferroic orders, and cross-coupling between them, such as magnetic spin, polarisation, ferroelastic ordering, and ferrotoroidicity. Based on the type of ordering and coupling, they have drawn increasing interest for a variety of device applications, such as magnetic field sensors, nonvolatile memory elements, ferroelectric photovoltaics, nano-electronics etc. Since single-phase materials exist rarely in nature with strong cross-coupling properties, intensive research activity is being pursued towards the discovery of new single-phase multiferroic materials and the design of new engineered materials with strong magneto-electric (ME) coupling. This review article summarises the development of different kinds of multiferroic material: single-phase and composite ceramic, laminated composite and nanostructured thin films. Thin-film nanostructures have higher magnitude direct ME coupling values and clear evidence of indirect ME coupling compared with bulk materials. Promising ME coupling coefficients have been reported in laminated composite materials in which the signal to noise ratio is good for device fabrication. We describe the possible applications of these materials.
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Affiliation(s)
- N Ortega
- Department of Physics and Institute for Functional Nanomaterials, University of Puerto Rico, San Juan, PR 00931-3343 USA
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Radaelli PG, Dhesi SS. The contribution of Diamond Light Source to the study of strongly correlated electron systems and complex magnetic structures. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2015; 373:rsta.2013.0148. [PMID: 25624510 DOI: 10.1098/rsta.2013.0148] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
We review some of the significant contributions to the field of strongly correlated materials and complex magnets, arising from experiments performed at the Diamond Light Source (Harwell Science and Innovation Campus, Didcot, UK) during the first few years of operation (2007-2014). We provide a comprehensive overview of Diamond research on topological insulators, multiferroics, complex oxides and magnetic nanostructures. Several experiments on ultrafast dynamics, magnetic imaging, photoemission electron microscopy, soft X-ray holography and resonant magnetic hard and soft X-ray scattering are described.
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Affiliation(s)
- P G Radaelli
- Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU, UK
| | - S S Dhesi
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
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7
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Windsor YW, Huang SW, Hu Y, Rettig L, Alberca A, Shimamoto K, Scagnoli V, Lippert T, Schneider CW, Staub U. Multiferroic properties of o-LuMnO3 controlled by b-axis strain. PHYSICAL REVIEW LETTERS 2014; 113:167202. [PMID: 25361276 DOI: 10.1103/physrevlett.113.167202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Indexed: 06/04/2023]
Abstract
Strain is a leading candidate for controlling magnetoelectric coupling in multiferroics. Here, we use x-ray diffraction to study the coupling between magnetic order and structural distortion in epitaxial films of the orthorhombic (o-) perovskite LuMnO(3). An antiferromagnetic spin canting in the E-type magnetic structure is shown to be related to the ferroelectrically induced structural distortion and to a change in the magnetic propagation vector. By comparing films of different orientations and thicknesses, these quantities are found to be controlled by b-axis strain. It is shown that compressive strain destabilizes the commensurate E-type structure and reduces its accompanying ferroelectric distortion.
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Affiliation(s)
- Y W Windsor
- Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - S W Huang
- Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - Y Hu
- General Energy Research Department, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - L Rettig
- Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - A Alberca
- Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - K Shimamoto
- General Energy Research Department, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - V Scagnoli
- Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - T Lippert
- General Energy Research Department, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - C W Schneider
- General Energy Research Department, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - U Staub
- Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
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Haw SC, Lee JM, Chen SA, Lu KT, Lin PA, Lee CH, Lee MT, Pi TW, Hu Z, Chen JM. Anisotropic orbital occupation and Jahn-Teller distortion of orthorhombic YMnO3 epitaxial films: A combined experimental and theoretical study on polarization-dependent x-ray absorption spectroscopy. J Chem Phys 2014. [DOI: 10.1063/1.4871114] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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9
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Lu C, Dong S, Xia Z, Luo H, Yan Z, Wang H, Tian Z, Yuan S, Wu T, Liu J. Polarization enhancement and ferroelectric switching enabled by interacting magnetic structures in DyMnO₃ thin films. Sci Rep 2013; 3:3374. [PMID: 24291803 PMCID: PMC3844969 DOI: 10.1038/srep03374] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 11/13/2013] [Indexed: 11/10/2022] Open
Abstract
The mutual controls of ferroelectricity and magnetism are stepping towards practical applications proposed for quite a few promising devices in which multiferroic thin films are involved. Although ferroelectricity stemming from specific spiral spin ordering has been reported in highly distorted bulk perovskite manganites, the existence of magnetically induced ferroelectricity in the corresponding thin films remains an unresolved issue, which unfortunately halts this step. In this work, we report magnetically induced electric polarization and its remarkable response to magnetic field (an enhancement of ~800% upon a field of 2 Tesla at 2 K) in DyMnO₃ thin films grown on Nb-SrTiO₃ substrates. Accompanying with the large polarization enhancement, the ferroelectric coercivity corresponding to the magnetic chirality switching field is significantly increased. A picture based on coupled multicomponent magnetic structures is proposed to understand these features. Moreover, different magnetic anisotropy related to strain-suppressed GdFeO₃-type distortion and Jahn-Teller effect is identified in the films.
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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
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White JS, Bator M, Hu Y, Luetkens H, Stahn J, Capelli S, Das S, Döbeli M, Lippert T, Malik VK, Martynczuk J, Wokaun A, Kenzelmann M, Niedermayer C, Schneider CW. Strain-induced ferromagnetism in antiferromagnetic LuMnO3 thin films. PHYSICAL REVIEW LETTERS 2013; 111:037201. [PMID: 23909354 DOI: 10.1103/physrevlett.111.037201] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Revised: 06/14/2013] [Indexed: 06/02/2023]
Abstract
Single phase and strained LuMnO(3) thin films are discovered to display coexisting ferromagnetic and antiferromagnetic orders. A large moment ferromagnetism (≈1μ(B)), which is absent in bulk samples, is shown to display a magnetic moment distribution that is peaked at the highly strained substrate-film interface. We further show that the strain-induced ferromagnetism and the antiferromagnetic order are coupled via an exchange field, therefore demonstrating strained rare-earth manganite thin films as promising candidate systems for new multifunctional devices.
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Affiliation(s)
- J S White
- Laboratory for Neutron Scattering, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
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Fink J, Schierle E, Weschke E, Geck J. Resonant elastic soft x-ray scattering. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2013; 76:056502. [PMID: 23563216 DOI: 10.1088/0034-4885/76/5/056502] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Resonant (elastic) soft x-ray scattering (RSXS) offers a unique element, site and valence specific probe to study spatial modulations of charge, spin and orbital degrees of freedom in solids on the nanoscopic length scale. It is not only used to investigate single-crystalline materials. This method also enables one to examine electronic ordering phenomena in thin films and to zoom into electronic properties emerging at buried interfaces in artificial heterostructures. During the last 20 years, this technique, which combines x-ray scattering with x-ray absorption spectroscopy, has developed into a powerful probe to study electronic ordering phenomena in complex materials and furthermore delivers important information on the electronic structure of condensed matter. This review provides an introduction to the technique, covers the progress in experimental equipment, and gives a survey on recent RSXS studies of ordering in correlated electron systems and at interfaces.
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Affiliation(s)
- J Fink
- Leibniz-Institute for Solid State and Materials Research Dresden, PO Box 270116, D-01171 Dresden, Germany.
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