Magnetic Hyperfine Interactions of 57Fe in ScFeO3

被引：5

作者：

Sobolev, A. ^{[1
]}

Belik, A. ^{[2
]}

Presniakov, I. ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119991, Russia

[2] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton, Tsukuba, Ibaraki 3050044, Japan

来源：

MOSSBAUER SPECTROSCOPY IN MATERIALS SCIENCE - 2012 | 2012年 / 1489卷

关键词：

Mossbauer spectroscopy; multiferroics; spin relaxation; MOSSBAUER; CORUNDUM;

D O I：

10.1063/1.4759481

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mossbauer spectra of ScFeO3 oxide, recorded over a wide range of temperature, were analyzed in terms of different magnetic environments (Sc3+/Fe3+) possible for the Fe-57 nuclei. The covalence effects on the magnetic superexchange Fe3+-O-Fe3+ interactions and super-transferred hyperfine interactions of Fe-57 atoms in the ferrite structure are discussed. A consistent description of the results in the framework of Weiss molecular field model considering the specific local environment of iron atoms enabled to estimate exchange integrals (J(FeFe)). A proper model for spectra fitting using a six-state spin relaxation phenomenon was proposed.

引用

页码：133 / 138

页数：6

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