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MAGNETIC INTERACTIONS BETWEEN Mn AND Co IONS IN OXIDES WITH PEROVSKITE STRUCTURE

Abstract

Ln1–ySryMn1–xСoxO3 compositions have been studied using neutron diffraction and magnetization measurements. The valence of cobalt ions increases from two to three as the cobalt content is growing. Trivalent cobalt is dominant in the low spin state; however there is a small fraction of cobalt in the high spin state. Exchange interactions between Co3+ (high spin state) and Mn4+ ions are ferromagnetic and are similar in magnitude to positive exchange interactions between Co2+ and Mn4+ ions.

About the Authors

I. O. TROYANCHUK
НПЦ НАН Беларуси по материаловедению, Минск
Belarus


A. N. CHOBOT
НПЦ НАН Беларуси по материаловедению, Минск
Belarus


O. S. MANTYTSKAYA
НПЦ НАН Беларуси по материаловедению, Минск
Belarus


N. V. TERESHKO
НПЦ НАН Беларуси по материаловедению, Минск
Belarus


G. M. CHOBOT
Белорусский государственный аграрный технический университет, Минск
Belarus


E. A. EFIMOVA
Объединенный институт ядерных исследований, Дубна
Russian Federation


S. N. PASTUSHONOK
Белорусский государственный педагогический университет им. М. Танка, Минск
Belarus


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ISSN 1561-8323 (Print)
ISSN 2524-2431 (Online)