Isotropic non-Heisenberg magnet with two sublattices (1,1/2): Statics and dynamics

被引：1

作者：

Krivtsova, A., V ^{[1
]}

Matyunina, Ya Yu ^{[1
]}

Polyanskaya, E. A. ^{[1
]}

Kosmachev, O. A. ^{[1
]}

Fridman, Yu A. ^{[1
]}

机构：

[1] Vernadsky Crimean Fed Univ, Simferopol 295007, Russia

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2020年 / 513卷

关键词：

Ferrimagnet; Spectrum of elementary excitation; Quadrupolar-ferrimagnetic phase; Phase transition; SPIN DYNAMICS; PHASE STATES; ANTIFERROMAGNETS; SPINTRONICS; WAVES; ORDER;

D O I：

10.1016/j.jmmm.2020.167178

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the mean-field approximation, static and dynamic properties of isotropic ferrimagnet with two sub-lattices with spin equaling one and spin one-half are investigated. It was shown that the account of non-Heisenberg (biquadratic) exchange interaction can lead to the realization of the phase characterized with vector order parameters (ferrimagnetic phase) or of the phase, characterized by both vector and tensor order parameters (quadrupolar-ferrimagnetic)..The quadrupolar-ferrimagnetic phase realizes due to the account of biquadratic exchange interaction in the first spin-1 sub-lattice. The type of the phase transition and the conditions of the magnetic moments compensation were determined.

引用

页数：7

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