The role of iron in the enhancement of negative magnetoresistance in La 0.8Sr 0.2Fe xCo 1-xO 3-z

Z. Németh, Z. Klencsár, E. Kuzmann, Z. Homonnay, A. Vértes, J. Hakl, K. Vad, S. Mészáros, B. Lackner, K. Kellner, G. Gritzner, J. M. Grenèche, A. Lindbaum, S. K. De

Research output: Chapter in Book/Report/Conference proceedingsConference contributionpeer-review

Abstract

The role of iron in enhancing the magnetoresistance in the compounds La 0.8Sr 0.2Fe xCo 1-xO 3-z was investigated by studying the electronic and magnetic structure of La 0.8Sr 0.2Fe xCo 1-xO 3-z as a function of temperature. For this purpose 57Fe transmission Mössbauer spectroscopy, magnetoresistance, as well as AC and DC magnetization measurements were applied. The detailed study of the temperature dependence of 57Fe Mössbauer parameters gave possibility to explore correlations between the local electronic and magnetic state of iron and the magnetic susceptibility as well as magnetoresistance in La 0.8Sr 0.2Fe xCo 1-xO 3-z. On the basis of the obtained results an attempt was made to explain the exotic magnetic and MR properties of these perovskites.

Original languageEnglish
Title of host publicationINDUSTRIAL APPLICATIONS OF THE MOSSBAUER EFFECT
Subtitle of host publicationInternational Symposium on the Industrial Applications of the Mossbauer Effect
Pages217-222
Number of pages6
DOIs
Publication statusPublished - 26 Apr 2005
Externally publishedYes
EventInternational Conference on the Industrial Applications of the Mossbauer Effect - Madrid, Spain
Duration: 4 Oct 20048 Oct 2004

Publication series

NameAIP Conference Proceedings
Volume765
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceInternational Conference on the Industrial Applications of the Mossbauer Effect
CountrySpain
CityMadrid
Period04.10.200408.10.2004

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