The origin of frustration of magnetic coupling in the NiFeCrO4 ferrite

Autor:	A. N. Goryaga, L. G. Antoshina, D. A. Chursin
Rok vydání:	2002
Předmět:	Materials science Magnetic structure Magnetic moment Magnetic domain Condensed matter physics media_common.quotation_subject Exchange interaction Beta ferrite Frustration Magnetostriction Condensed Matter Physics Electronic Optical and Magnetic Materials Ferrite (magnet) media_common
Zdroj:	Physics of the Solid State. 44:747-751
ISSN:	1090-6460 1063-7834
Popis:	The magnetostriction of the NiFeCrO4 ferrite is investigated for the first time. It is found that the frustration of magnetic coupling occurs only in the B sublattice of the NiFeCrO4 ferrite, whereas the A sublattice has a usual magnetic structure. The inference is made that the frustration of magnetic coupling in the B sublattice is caused not only by the negative direct BB exchange interaction Cr B 3+ -Cr B 3+ but also by the positive indirect AB exchange interaction Fe A 3+ -O2−-Cr B 3+ . Reasoning from the experimental data and an analysis of the exchange interactions in the NiFeCrO4 ferrite sample, it is demonstrated for the first time that the magnetic moments of Fe A 3+ ions in this ferrite deviate from collinearity. It is established that, at low temperatures, the B sublattice of the NiFeCrO4 ferrite is responsible for the total magnetic moment n 0exp.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8f81fff046630ddebd40325742b52ce5 https://doi.org/10.1134/1.1470570 Zobrazit plný text záznamu Full text from SpringerLink