Low Temperature Physics: 38, 843 (2012); https://doi.org/10.1063/1.4752099 (5 pages)
Fizika Nizkikh Temperatur: Volume 38, Number 9 (September 2012), p. 1062-1068    ( to contents , go back )

Kinetics of magnetization reversal processes in quasi-one-dimentional Ising superantiferromagnet [{CH3}3NH]CoCl3·2H2O

A.S. Chernyi, E.N. Khatsko, A.I. Rykova, and A.V. Yeremenko

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
E-mail: cherny@ilt.kharkov.ua
pos Анотація:

Received May 16, 2012

Abstract

The measurement data on the processes of magnetization reversal of a CoTAC single crystal in a temperature range 4.2–0.5 K are reported. The relaxation processes are studied as a function of magnetic field, temperature and time. It is shown that the data can be described by the model of interacting superparamagnetic formations — nanoclusters. Typical constants of the interaction, barrier energy and domain size are determined.

PACS: 75.30.–m Intrinsic properties of magnetically ordered materials;
PACS: 75.10.Nr Spin-glass and other random models;
PACS: 75.40.Cx Static properties;
PACS: 75.40.Gb Dynamic properties .

Key words: nanoclusters, superparamagnetic formations, relaxation processes.

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