This article is cited in 3 papers

Magnetism

Temperature dependence of static and dynamic properties of an anisotropic ferrimagnet

V. I. Butrim^a, B. A. Ivanov^b, O. A. Kosmachev^a, Yu. A. Fridman<sup>a

a</sup> Vernadskiy Tavricheskiy National University, Simferopol'
^b Institute of Magnetism, National Academy of Sciences of Ukraine, Kiev

Abstract: The temperature dependences of the magnetizations of sublattices and the spectra of elementary excitations of an anisotropic ferrimagnet have been investigated. It has been shown that, in the anisotropic ferrimagnet, even a weak single-ion anisotropy induces the quantum spin reduction effect and, as a consequence, changes the behavior of the magnetizations of the sublattices. This gives rise to a new branch of magnetic excitations with the purely longitudinal dynamics of the average value of the spin due to the quantum spin reduction effect.

Received: 15.11.2011

 English version: Physics of the Solid State, 2012, 54:7, 1363–1369

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