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Geers M, Gill TB, Burnett AD, Bassey EN, Fabelo O, Cañadillas-Delgado L, Cliffe MJ. Magnetic structure and properties of the honeycomb antiferromagnet [Na(OH 2) 3]Mn(NCS) 3. Phys Chem Chem Phys 2024; 26:15844-15849. [PMID: 38779829 DOI: 10.1039/d4cp01265h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
We report the magnetic structure and properties of a thiocyanate-based honeycomb magnet [Na(OH2)3]Mn(NCS)3 which crystallises in the unusual low-symmetry trigonal space group P3̄. Magnetic measurements on powder samples show this material is an antiferromagnet (ordering temperature TN,mag = 18.1(6) K) and can be described by nearest neighbour antiferromagnetic interactions J = -11.07(4) K. A method for growing neutron-diffraction sized single crystals (>10 mm3) is demonstrated. Low temperature neutron single crystal diffraction shows that the compound adopts the collinear antiferromagnetic structure with TN,neut = 18.94(7) K, magnetic space group P3̄'. Low temperature second-harmonic generation (SHG) measurements provide no evidence of breaking of the centre of symmetry.
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Affiliation(s)
- Madeleine Geers
- School of Chemistry, University Park, Nottingham, NG7 2RD, UK.
- Institut Laue Langevin, 71 avenue des Martyrs CS 20156, 38042 Grenoble Cedex 9, France
| | - Thomas B Gill
- School of Electronic and Electrical Engineering, University of Leeds, Leeds, LS2 9JT, UK
| | | | - Euan N Bassey
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
| | - Oscar Fabelo
- Institut Laue Langevin, 71 avenue des Martyrs CS 20156, 38042 Grenoble Cedex 9, France
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Lyu HY, Zhang Z, You JY, Yan QB, Su G. Two-Dimensional Intercalating Multiferroics with Strong Magnetoelectric Coupling. J Phys Chem Lett 2022; 13:11405-11412. [PMID: 36459057 DOI: 10.1021/acs.jpclett.2c03169] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Intrinsic two-dimensional (2D) multiferroics that couple ferromagnetism and ferroelectricity are rare. Here, we present an approach to achieve 2D multiferroics using powerful intercalation technology. In this approach, metal atoms such as Cu or Ag atoms are intercalated in bilayer CrI3 to form Cu(CrI3)4 or Ag(CrI3)4. The intercalant leads to the inversion symmetry breaking and produces a large out-of-plane electric polarization with a low transition barrier and a small reversal electric field, exhibiting excellent 2D ferroelectric properties. In addition, due to charge transfer between the intercalated atoms and bilayer CrI3, the interlayer coupling transits from antiferromagnetic to ferromagnetic, and the intralayer ferromagnetic coupling is also enhanced. Furthermore, the built-in electric polarization causes a distinct surface magnetization difference, generating a strong magnetoelectric coupling with a coefficient larger than that of Fe, Co, and Ni thin films. Our work paves a practical path for 2D multiferroics, which may have crucial applications in spintronics.
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Affiliation(s)
- Hou-Yi Lyu
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing100049, China
| | - Zhen Zhang
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Division of Advanced Materials, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing100049, China
| | - Jing-Yang You
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore117551
| | - Qing-Bo Yan
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing100049, China
| | - Gang Su
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing100049, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing100049, China
- Kavli Institute for Theoretical Sciences, and CAS Center of Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing100190, China
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Chen X, Zheng S, Liu M, Zou T, Wang W, Nie K, Liu F, Xie Y, Zeng M, Wang X, Li H, Dong S, Liu JM. Direct Evidence for an Intermediate Multiferroic Phase in LiCuFe 2(VO 4) 3. Inorg Chem 2021; 61:944-949. [PMID: 34965109 DOI: 10.1021/acs.inorgchem.1c02995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Magnetic susceptibility, specific heat, dielectric, and electric polarization of LiCuFe2(VO4)3 have been investigated. Two sequential antiferromagnetic transitions at TN1 ∼ 9.95 K and TN2 ∼ 8.17 K are observed under zero magnetic field. Although a dielectric peak at TN1 is clearly identified, the measured pyroelectric current also exhibits a sharp peak at TN1, implying the magnetically relevant ferroelectricity. Interestingly, another pyroelectric peak around TN2 with an opposite signal is observed, resulting in the disappearance of electric polarization below TN2. Besides, the electric polarization is significantly suppressed in response to external magnetic field, evidencing a remarkable magnetoelectric effect. These results suggest the essential relevance of the magnetic structure with the ferroelectricity in LiCuFe2(VO4)3, deserving further investigation of the underlying mechanism.
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Affiliation(s)
- Xiyu Chen
- Institute for Advanced Materials, Hubei Normal University, Huangshi 435002, China
| | - Shuhan Zheng
- Institute for Advanced Materials, Hubei Normal University, Huangshi 435002, China
| | - Meifeng Liu
- Institute for Advanced Materials, Hubei Normal University, Huangshi 435002, China
| | - Tao Zou
- Collaborative Innovation Center of Light Manipulations and Applications, Shangdong Normal University, Jinan 250358, China
| | - Wei Wang
- Institute for Advanced Materials, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Keer Nie
- Institute for Advanced Materials, Hubei Normal University, Huangshi 435002, China
| | - Fei Liu
- Institute for Advanced Materials, Hubei Normal University, Huangshi 435002, China
| | - Yunlong Xie
- Institute for Advanced Materials, Hubei Normal University, Huangshi 435002, China
| | - Min Zeng
- Institute for Advanced Materials, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Xiuzhang Wang
- Institute for Advanced Materials, Hubei Normal University, Huangshi 435002, China
| | - Hong Li
- Institute for Advanced Materials, Hubei Normal University, Huangshi 435002, China
| | - Shuai Dong
- School of Physics, Southeast University, Nanjing 211189, China
| | - Jun-Ming Liu
- Institute for Advanced Materials, Hubei Normal University, Huangshi 435002, China.,Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
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Dong S, Xiang H, Dagotto E. Magnetoelectricity in multiferroics: a theoretical perspective. Natl Sci Rev 2019; 6:629-641. [PMID: 34691919 PMCID: PMC8291640 DOI: 10.1093/nsr/nwz023] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 01/31/2019] [Accepted: 02/04/2019] [Indexed: 11/24/2022] Open
Abstract
The key physical property of multiferroic materials is the existence of coupling between magnetism and polarization, i.e. magnetoelectricity. The origin and manifestations of magnetoelectricity can be very different in the available plethora of multiferroic systems, with multiple possible mechanisms hidden behind the phenomena. In this review, we describe the fundamental physics that causes magnetoelectricity from a theoretical viewpoint. The present review will focus on mainstream physical mechanisms in both single-phase multiferroics and magnetoelectric heterostructures. The most recent tendencies addressing possible new magnetoelectric mechanisms will also be briefly outlined.
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Affiliation(s)
- Shuai Dong
- School of Physics, Southeast University, Nanjing 211189, China
| | - Hongjun Xiang
- Key Laboratory of Computational Physical Sciences (Ministry of Education), State Key Laboratory of Surface Physics, and Department of Physics, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
| | - Elbio Dagotto
- Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996, USA
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
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Zhang JJ, Lin L, Zhang Y, Wu M, Yakobson BI, Dong S. Type-II Multiferroic Hf2VC2F2 MXene Monolayer with High Transition Temperature. J Am Chem Soc 2018; 140:9768-9773. [DOI: 10.1021/jacs.8b06475] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jun-Jie Zhang
- School of Physics, Southeast University, Nanjing 211189, China
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Lingfang Lin
- School of Physics, Southeast University, Nanjing 211189, China
| | - Yang Zhang
- School of Physics, Southeast University, Nanjing 211189, China
| | - Menghao Wu
- School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Boris I. Yakobson
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Shuai Dong
- School of Physics, Southeast University, Nanjing 211189, China
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Lee M, Choi ES, Ma J, Sinclair R, Dela Cruz CR, Zhou HD. Magnetism and multiferroicity of an isosceles triangular lattice antiferromagnet Sr3NiNb2O9. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:476004. [PMID: 27661860 DOI: 10.1088/0953-8984/28/47/476004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Various experimental measurements were performed to complete the phase diagram of a weakly distorted triangular lattice system, Sr3NiNb2O9 with Ni(2+) , spin-1 magnetic ions. This compound possesses an isosceles triangular lattice with two shorter bonds and one longer bond. It shows a two-step magnetic phase transition at [Formula: see text] K and [Formula: see text] K at zero magnetic field, characteristic of an easy-axis anisotropy. In the magnetization curves, a series of magnetic phase transitions was observed such as an up-up-down phase at [Formula: see text] T with 1/3 of the saturation magnetization (M sat) and an oblique phase at [Formula: see text] T with [Formula: see text]/3 M sat. Intriguingly, the magnetic phase transition below T N2 is in tandem with the ferroelectricity, which demonstrates multiferroic behaviors. Moreover, the multiferroic phase persists in all magnetically ordered phases regardless of the spin structure. The comparison between the phase diagrams of Sr3NiNb2O9 and its sister compound with an equilateral triangular lattice antiferromagnet Ba3NiNb2O9 (Hwang et al 2012 Phys. Rev. Lett. 109 257205), illustrates how a small imbalance among exchange interactions change the magnetic ground states of the TLAFs.
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Affiliation(s)
- M Lee
- Department of Physics, Florida State University, Tallahassee, FL 32306-3016, USA. National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310-3706, USA
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Chowki S, Kumar R, Mohapatra N, Mahajan AV. Long-range antiferromagnetic order and possible field induced spin-flop transition in BiMnVO 5. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:486002. [PMID: 27669972 DOI: 10.1088/0953-8984/28/48/486002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report the bulk magnetic characterization of a dimeric chain material, BiMnVO5, by means of magnetic susceptibility, magnetization and heat capacity measurements. Our results provide compelling evidence of an antiferromagnetic (AFM) transition at (T N) ~ 11.5 K. Moreover, the magnetic entropy change in zero field saturates to 14.6 J mol-1 K-1 which is close to the total spin entropy of Mn2+. The development of long-range magnetic order in this chain material demonstrates the interplay of strong intra-chain and inter-chain interactions between the dimers, in addition to the intra-dimer interaction. Low-temperature (T < T N) heat capacity data indicate the presence of a gap (Δ/k B ≈ 5 K) in the spin excitations. Furthermore, the isothermal magnetization below T N shows an anomaly in the slope between 30 and 40 kOe which is suggestive of a spin-flop transition. Such a low-field spin-flop transition and gapped spin wave excitations may be attributed to the presence of (weak) magnetic anisotropy in this material. We attempt to construct a phase diagram in the magnetic field-temperature plane by extracting data from in-field heat capacity and isothermal magnetization measurements.
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Affiliation(s)
- S Chowki
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Odisha 751007, India
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Liu YY, Lu YP, Zhang L, Fang Y, Han ZD, Qian B, Jiang XF, Zhu LY, Wang DH, Du YW. Magnetic manipulation of electric orders in Co4NbTaO9. RSC Adv 2016. [DOI: 10.1039/c6ra19594f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Magnetic, dielectric and magnetoelectric properties of the polycrystalline Co4NbTaO9 have been investigated in this paper.
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