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Magnetism on quasi-1-D lattices in novel non-centrosymmetric Ba3CrVS4O3 and in centrosymmetric La3TMWS3O6 (TM = Cr, Fe, Co)

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Kim,  Jinkwang
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Lai,  Kwing To
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Valldor,  Martin
Martin Valldor, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Kim, J., Lai, K. T., & Valldor, M. (2017). Magnetism on quasi-1-D lattices in novel non-centrosymmetric Ba3CrVS4O3 and in centrosymmetric La3TMWS3O6 (TM = Cr, Fe, Co). Journal of Magnetism and Magnetic Materials, 435, 126-135. doi:10.1016/j.jmmm.2017.04.003.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002D-85C9-0
Abstract
La3TMWS3O6 (TM = Fe, Co) and novel Ba3CrVS4O3 can be obtained as pure polycrystalline samples by mineralizer aided solid-state reactions and a solid-state reaction with further purification by water, respectively. In contrast, La3CrWS3O6 needs a standard solid-state reaction to form but the final product contains observable impurities. All four compounds contain similar quasi-1-D magnetic lattices although La-based ones are centrosymmetric (P63/m) and the Ba-containing one is polar and non-centrosymmetric (P63). Strong antiferromagnetic couplings are observed along the magnetic chains in the Fe and Cr containing compounds. As a result, short-range magnetic order is suggested at low temperatures for the Fechain, which can be related to magneto-electric couplings. The Co3+-homologue shows typical diamagnetic behavior, as supported by its insulating nature, which is due to a low-spin state. The polar Cr(3+)compound exhibits very different magnetic behavior compared to its corresponding non-polar relative. This proves a strong influence on the physical properties from the crystallographic symmetry. (C) 2017 Elsevier B.V. All rights reserved.