2-ION EXCHANGE-RELATIVISTIC ANISOTROPY - THE TENSOR FORM, TEMPERATURE-DEPENDENCE, AND NUMERICAL VALUE / MOSKVIN AS,BOSTREM IG,SIDOROV MA // ZHURNAL EKSPERIMENTALNOI I TEORETICHESKOI FIZIKI. - 1993. - V. 104, l. 1. - P. 2499-2518.

ISSN/EISSN:

0044-4510 / нет данных

Type:

Article

Abstract:

For the first time the successive analysis is given of the tensor form numerical value, and temperature dependence of the two-ion exchange-relativistic anisotropy in pairs of S-like 3d-ions. Besides the familiar quasi dipolar contribution the anisotropy contains a number of new nondipolar contributions comparable with the familiar one and having their own characteristic temperature dependence. The microscopic calculation shows that the contribution of Fe3+-ion exchange-coupled pairs into the effective anisotropy constant can reach values of about 1 cm-1 exceeding the corresponding magneto-dipolar contribution. In contrast to the historically formed notations the exchange-relativistic anisotropy proves to be one of the most important sources of magnetic anisotropy and magnetoelestic coupling in magnetodielectrics based on S-like 3d-ions (Fe2+, Mn2+, Cr3+, Ni2+, ...). In the molecular field approximation the four-parameter formula for the temperature dependence of magnetic anisotropy and magnetoelastic constants is obtainted. The explanation for the particular temperature dependences K(T) in alpha-Fe2O3 and Cr2O3 is given.

Author keywords:

ORTHO-FERRITES

DOI:

нет данных

Web of Science ID:

ISI:A1993LT62100016

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JUL
Publisher	MEZHDUNARODNAYA KNIGA
Address	39 DIMITROVA UL., 113095 MOSCOW, RUSSIA
Language	Russian
Keywords-Plus	ORTHO-FERRITES
Research-Areas	Physics
Web-of-Science-Categories	Physics, Multidisciplinary
Number-of-Cited-References	24
Usage-Count-Since-2013	1
Journal-ISO	Zhurnal Eksperimentalnoi Teor. Fiz.
Doc-Delivery-Number	LT621