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Matsubara N, Masese T, Suard E, Forslund OK, Nocerino E, Palm R, Guguchia Z, Andreica D, Hardut A, Ishikado M, Papadopoulos K, Sassa Y, Månsson M. Cation Distributions and Magnetic Properties of Ferrispinel MgFeMnO 4. Inorg Chem 2020; 59:17970-17980. [PMID: 33264565 PMCID: PMC7759007 DOI: 10.1021/acs.inorgchem.0c02241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The crystal structure and magnetic properties of the cubic spinel MgFeMnO4 were studied by using a series of in-house techniques along with large-scale neutron diffraction and muon spin rotation spectroscopy in the temperature range between 1.5 and 500 K. The detailed crystal structure is successfully refined by using a cubic spinel structure described by the space group Fd3̅m. Cations within tetrahedral A and octahedral B sites of the spinel were found to be in a disordered state. The extracted fractional site occupancies confirm the presence of antisite defects, which are of importance for the electrochemical performance of MgFeMnO4 and related battery materials. Neutron diffraction and muon spin spectroscopy reveal a ferrimagnetic order below TC = 394.2 K, having a collinear spin arrangement with antiparallel spins at the A and B sites, respectively. Our findings provide new and improved understanding of the fundamental properties of the ferrispinel materials and of their potential applications within future spintronics and battery devices.
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Affiliation(s)
- Nami Matsubara
- Department of Applied Physics, KTH Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - Titus Masese
- Department of Energy and Environment, Research Institute of Electrochemical Energy (RIECEN), National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka 563-8577, Japan.,AIST-Kyoto University Chemical Energy Materials Open Innovation Laboratory (ChEM-OIL), National Institute of Advanced Industrial Science and Technology (AIST), Sakyo-ku, Kyoto 606-8501, Japan
| | - Emmanuelle Suard
- Institut Laue-Langevin, 71 Avenue des Martyrs, 38042 Cedex 9 Grenoble, France
| | - Ola Kenji Forslund
- Department of Applied Physics, KTH Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - Elisabetta Nocerino
- Department of Applied Physics, KTH Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - Rasmus Palm
- Department of Applied Physics, KTH Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - Zurab Guguchia
- Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen, PSI, Switzerland
| | - Daniel Andreica
- Faculty of Physics, Babes-Bolyai University, 400084 Cluj-Napoca, Romania
| | - Alexandra Hardut
- Faculty of Physics, Babes-Bolyai University, 400084 Cluj-Napoca, Romania
| | - Motoyuki Ishikado
- Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
| | | | - Yasmine Sassa
- Department of Physics, Chalmers University of Technology, SE-41296 Gothenburg, Sweden
| | - Martin Månsson
- Department of Applied Physics, KTH Royal Institute of Technology, SE-10691 Stockholm, Sweden
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Quilliam JA, Bert F, Kermarrec E, Payen C, Guillot-Deudon C, Bonville P, Baines C, Luetkens H, Mendels P. Singlet ground state of the quantum antiferromagnet Ba(3)CuSb(2)O(9). PHYSICAL REVIEW LETTERS 2012; 109:117203. [PMID: 23005669 DOI: 10.1103/physrevlett.109.117203] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Indexed: 06/01/2023]
Abstract
We present local probe results on the honeycomb lattice antiferromagnet Ba(3)CuSb(2)O(9). Muon spin relaxation measurements in a zero field down to 20 mK show unequivocally that there is a total absence of spin freezing in the ground state. Sb NMR measurements allow us to track the intrinsic susceptibility of the lattice, which shows a maximum at around 55 K and drops to zero in the low-temperature limit. The spin-lattice relaxation rate shows two characteristic energy scales, including a field-dependent crossover to exponential low-temperature behavior, implying gapped magnetic excitations.
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Affiliation(s)
- J A Quilliam
- Laboratoire de Physique des Solides, Université Paris-Sud 11, UMR CNRS 8502, 91405 Orsay, France
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