Cation-ordered A'1/2A1/2B2X4 magnetic spinels as magnetoelectrics

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:364

Article

Ter-Oganessian, N. V.

关键词: Magnetoelectric;    Spinel;    Atomic ordering;    Multiferroic;   

DOI  :  10.1016/j.jmmm.2014.04.019

来源: Elsevier

【 摘 要 】

We show that 1:1 ordering of A and PC cations in A'(1/2)A1/2B2X4 magnetic spinets results in appearance of magnetoelectric properties. Possible value of magnetically induced electric polarization is calculated using the recently proposed microscopic model, which takes into account spin-dependent electric dipole moments of magnetic ions located in noncentrosymmetric crystallographic positions. We build phenomenological models of magnetic phase transitions in cation-ordered spinets, which describe ferromagnetic and antiferromagnetic ordering patterns of B cation spins, and calculate the respective magnetoelectric responses. We find that magnetoelectric coefficients diverge at ferromagnetic or weak ferromagnetic phase transitions in ordered spinets. (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

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