Low Temperature Physics: 40, 635 (2014); https://doi.org/10.1063/1.4890989
Fizika Nizkikh Temperatur: Volume 40, Number 7 (July 2014), p. 817-824    ( to contents , go back )

Longitudinal spin dynamics in nickel fluorosilicate

E.G. Galkina

Institute of Physics, National Academy of Sciences of Ukraine, Prospect Nauky 46, Kyiv, 03028 , Ukraine

B.A. Ivanov

Institute of Magnetism, 36-b Vernadskogo Blvd., Kyiv 03142, Ukraine
National Taras Shevchenko University of Kiev, Kiev 03127, Ukraine
E-mail: bivanov@i.com.ua

V.I. Butrim

Tavrija National University Vernadskij ave. 4, 95007 Simferopol, Ukraine
pos Анотація:

Received January 28, 2014

Abstract

The existense of single-ion anisotropy leads to the effect of the quantum spin reduction. This gives rise to a purely longitudinal magnetization dynamics, which coupled oscillations of the spin modulus and quadrupole quantum mean values built on the spin operators. For nickel fluorosilicate consists in of the effect of quantum spin reduction may be controlled by changing the pressure. The study of the longitudinal nonlinear spin dynamics and the analysis of possible photomagnetic effects show that this compound is a convenient model object to realize the switching of the magnetization direction under the action of femtosecond laser pulses.

PACS: 75.10.Jm Quantum spin models;
PACS: 75.10.Hk Classical spin models;
PACS: 05.45.–a Nonlinear dynamics and nonlinear dynamical systems.

Key words: ferromagnet, single-ion anisotropy, quantum spin reduction, magnetization switching, nickel fluorosilicate.

Published online: May 21, 2014

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