Fizika Nizkikh Temperatur: Volume 43, Number 5 (May 2017), p. 692-701    ( to contents , go back )

Magnetic field-induced phase transitions in rare-earth intermetallic ferrimagnets with compensation point

Ch.K. Sabdenov1, M.D. Davydova1, K.A. Zvezdin1,2, D.I. Gorbunov3,4, I.S. Tereshina5, A.V. Andreev3, and A.K. Zvezdin2.6

1Московский физико-технический институт (государственный университет) Институтский пер., 9, г. Долгопрудный, 141700, Московская область, Россия
E-mail: xbyubp@sibmail.com; davydova@phystech.edu

2Институт общей физики им. А.М. Прохорова РАН, ул. Вавилова, 38, г. Москва, 119991, Россия

3Institute of Physics, Czech Academy of Sciences, 182 21 Prague, Czech Republic

4Dresden High Magnetic Field Laboratory (HLD-EMFL) Helmholtz-Zentrum Dresden-Rossendorf, D-01314 Dresden, Germany

5МГУ имени М.В. Ломоносова, Физический факультет, Ленинские горы, д. 1, стр. 2, ГСП-1, г. Москва, 119991, Россия

6Физический институт им. П.Н. Лебедева РАН, Ленинский пр., 53, ГСП-1, г. Москва, 119991, Россия

Received October 5, 2016

Abstract

In this article the magnetic properties of strongly anisotropic ferrimagnets of the f–d type with compensation point in the large magnetic fields were studied. As example we use rare-earth intermetallics HoFexAl12–x, x = 5, 6. For these compounds the com-pensation point Tcomp > 0 is present when x = 5, and Tcomp ≈ 0 К when x = 6. In the framework of the two-sublattice model of a f–d ferrimagnet with a compensation point magnetic phase diagrams were obtained and analyzed. The magnetocrystalline anisotropy and weak inter-lattice exchange were taken into consideration. Special attention was paid to the influence of the strong rare-earth anisotropy on the behavior and properties of magnetic phase transitions.

PACS: 75.30.Gw Magnetic anisotropy;
PACS: 75.30.Kz Magnetic phase boundaries;
PACS: 75.40.Cx Static properties;
PACS: 75.50.Gg Ferrimagnetics.

Key words: magnetic phase transitions, rare-earth in-ter-metallics, compensation point, magnetic anisotro-py, high magnetic fields.

Published online: March 24, 2017

Download 2430803 byte View Contents

 
Copyright © ILTPE. . All rights reserved.
ISSN: 0132-6414 (Print) | ISSN: 1816-0328 (Online)