57Fe and 151Eu Mössbauer studies of magnetoresistive Europium based cobalt perovskites

被引：0
|
作者：
Z. Németh
E. Kuzmann
A. Vértes
Z. Homonnay
Z. Klencsár
J. M. Grenèche
J. Hakl
K. Vad
S. Mészáros
B. Lackner
K. Kellner
G. Gritzner
机构：
[1] Eötvös Loránd University,Department of Nuclear Chemistry
[2] Hungarian Academy of Sciences,Research Group for Nuclear Methods in Structural Chemistry
[3] UMR CNRS 6087 Université du Maine,Laboratoire de Physique de l’Etat Condensé
[4] Institute of Nuclear Research of the Hungarian Academy of Sciences,Institute for Chemical Technology of Inorganic Materials
[5] Johannes Kepler University,undefined
来源：
Hyperfine Interactions | 2006年 / 169卷
关键词：
magnetoresistance; perovskite; doped transition metal compounds; Mössbauer spectrometry;
D O I：
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中图分类号：
学科分类号：
摘要：
Eu0.8Sr0.2FexCo1−xO3−z CMR perovskites with different iron concentrations (x = 0, 0.025, 0.075, 0.15, 0.3) were investigated by X-ray diffraction, AC magnetic susceptibility, magnetotransport, as well as 57Fe and 151Eu Mössbauer spectrometry. The valence state of europium ions was found to be trivalent, independently of the iron concentration. 57Fe Mössbauer spectra and magnetic susceptibility of the investigated perovskites presented complementary results for the magnetic transitions.
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页码：1241 / 1246
页数：5
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