Strong field sweep rate dependence of the magnetization process in highly anisotropic antiferromagnets ErGa2 and DY3Co / Baranov NV,Markin PE,Mushnikov NV,Goto T // . - 2001. - V. 373-3, l. . - P. 405-408.

ISSN/EISSN:

0255-5476 / нет данных

Type:

Article; Proceedings Paper

Abstract:

The magnetization curves along the main crystallographic directions of single crystalline ErGa2 and Dy3Co samples have been measured in both steady and pulse magnetic fields. Both compounds are antiferromagnets with a strong magnetocrystalline anisotropy and exhibit metamagnetic transitions to the field-induced ferromagnetic state. In steady field, a two-steps-like metamagnetic transition through an intermediate ferri-magnetic phase was observed along the c axis of ErGa2 and along the {[}100] (a) axis of Dy3Co. Alternatively, in pulse fields the metamagnetic transition in both compounds occurs as a single step and is accompanied by heating of the samples. Owing to the quasiadiabatic pulse field magnetization process the temperature growth may exceed 20 K. The shape of the magnetization curves in pulse fields was found to depend strongly on the field sweep rate and on the initial temperature of the sample. The obtained results have been discussed in terms of the thermally activated nucleation of ferri- and ferromagnetic phases, the appearance and the relaxation of the metastable exited states of R-ions.

Author keywords:

antiferromagnets; magnetization curves; magnetic anisotropy; metamagnetism; relaxation; single crystals

DOI:

нет данных

Web of Science ID:

ISI:000172513500092

Соавторы в МНС:

Другие поля

Поле	Значение
Editor	Baryakhtar, VG
Booktitle	EUROPEAN MAGNETIC MATERIALS AND APPLICATIONS
Series	MATERIALS SCIENCE FORUM
Note	8th European Magnetic Materials and Applications Conference (EMMA 2000), KIEV, UKRAINE, JUN 07-10, 2000
Organization	Natl Acad Sci Ukraine; European Phys Soc; Minist Educ Ukraine; Sci \& Technol Ctr; Off Naval Res Int Field Off, Europe
Publisher	TRANS TECH PUBLICATIONS LTD
Address	BRANDRAIN 6, CH-8707 ZURICH-UETIKON, SWITZERLAND
Language	English
ISBN	0-87849-880-X
Research-Areas	Materials Science
Web-of-Science-Categories	Materials Science, Multidisciplinary
ResearcherID-Numbers	Mushnikov, Nikolay/K-9076-2013 Baranov, Nikolai/J-5042-2013 Markin, Pavel/K-7088-2013
ORCID-Numbers	Mushnikov, Nikolay/0000-0002-6354-2558 Baranov, Nikolai/0000-0002-9720-5314 Markin, Pavel/0000-0002-9537-2303
Number-of-Cited-References	7
Usage-Count-Since-2013	5
Doc-Delivery-Number	BT27U