Magnetic properties of a LuVO3 single crystal studied by magnetometry, heat capacity and neutron diffraction

Journal of Science: Advanced Materials and Devices

L.D. Tung¹  D.McK. Paul²  M.R. Lees²  G. Balakrishnan²  J. Schefer³ 

[1] Department of Physics, University College London, Gower Street, London WC1E 6BT, United Kingdom;Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom;Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland;

关键词: Magnetic materials;    Spin orbital order;    Antiferromagnets;    Disorder materials;    Heat capacity;   

DOI  :  10.1016/j.jsamd.2016.06.013

来源: DOAJ

【 摘 要 】

We have studied the magnetic properties of a LuVO3 single crystal. The compound shows an orbital ordering at TOO = 179 K followed by the antiferromagnetic spin ordering at TSO = 109 K. In the magnetically ordered regime, there appears an abrupt change at To = 82.5 K in the magnetisation, indicating a first-order transition. The compound has very large negative Weiss temperature observed along all the main crystallographic axes, suggesting a strong antiferromagnetic correlations in the paramagnetic state. The observation of hysteresis curves in the collinear antiferromagnetic regime is discussed in terms of an inhomogeneity generating some spins with weak local fields in a strongly antiferromagnetic matrix.

【 授权许可】

Unknown