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 proceedingConference contribution

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 publicationAIP Conference Proceedings
Pages217-222
Number of pages6
Volume765
DOIs
Publication statusPublished - Apr 26 2005
EventInternational Conference on the Industrial Applications of the Mossbauer Effect - Madrid, Spain
Duration: Oct 4 2004Oct 8 2004

Other

OtherInternational Conference on the Industrial Applications of the Mossbauer Effect
CountrySpain
CityMadrid
Period10/4/0410/8/04

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iron
augmentation
perovskites
alternating current
direct current
electronic structure
magnetic properties
magnetic permeability
magnetization
temperature dependence
electronics
spectroscopy
temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

The role of iron in the enhancement of negative magnetoresistance in La 0.8Sr 0.2Fe xCo 1-xO 3-z . / Németh, Z.; Klencsár, Z.; Kuzmann, E.; Homonnay, Z.; Vértes, A.; Hakl, J.; Vad, K.; Mészáros, S.; Lackner, B.; Kellner, K.; Gritzner, G.; Grenèche, J. M.; Lindbaum, A.; De, S. K.

AIP Conference Proceedings. Vol. 765 2005. p. 217-222.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Németh, Z, Klencsár, Z, Kuzmann, E, Homonnay, Z, Vértes, A, Hakl, J, Vad, K, Mészáros, S, Lackner, B, Kellner, K, Gritzner, G, Grenèche, JM, Lindbaum, A & De, SK 2005, The role of iron in the enhancement of negative magnetoresistance in La 0.8Sr 0.2Fe xCo 1-xO 3-z in AIP Conference Proceedings. vol. 765, pp. 217-222, International Conference on the Industrial Applications of the Mossbauer Effect, Madrid, Spain, 10/4/04. https://doi.org/10.1063/1.1923658
Németh, Z. ; Klencsár, Z. ; Kuzmann, E. ; Homonnay, Z. ; Vértes, A. ; Hakl, J. ; Vad, K. ; Mészáros, S. ; Lackner, B. ; Kellner, K. ; Gritzner, G. ; Grenèche, J. M. ; Lindbaum, A. ; De, S. K. / The role of iron in the enhancement of negative magnetoresistance in La 0.8Sr 0.2Fe xCo 1-xO 3-z AIP Conference Proceedings. Vol. 765 2005. pp. 217-222
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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 M{\"o}ssbauer spectroscopy, magnetoresistance, as well as AC and DC magnetization measurements were applied. The detailed study of the temperature dependence of 57Fe M{\"o}ssbauer 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.",
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AU - Homonnay, Z.

AU - Vértes, A.

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AU - Vad, K.

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AB - 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.

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