Electronic transport and magnetic properties of the perovskites La0.8Sr0.2Co1-xFexO 3; x ≤ 0.3

Hakl József, de Châtel de, Mészáros Sándor, Vad Kálmán, Klencsár Zoltán, Németh Zoltán, Kuzmann Erno, Homonnay Zoltán, Vértes Attila, Simopoulos Athanassios, Devlin Eamonn, Aoki Yoshitaka, Konno Hidetaka, De Subodh Kumar

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2 Citations (Scopus)

Abstract

Transport and magnetic properties of LaCoO3-based compounds, doped with 20% Sr and 2.5, 5, 10, 15, 20 and 30% Fe, were investigated by means of magnetization, resistivity and magnetoresistance measurements as well as by 57Fe Mössbauer spectroscopy. While the temperature dependence of the dc and ac magnetic susceptibilities reveals the presence of magnetic phase separation accompanied by spin-glass and cluster-glass behavior, the electrical resistivity and magnetoresistance characteristics indicate that the mesoscopic structure of the present compounds is rather well described as consisting of ferromagnetic, metallic grains embedded in an insulating matrix. The effect of the partial Co → Fe substitution on the bulk magnetic and transport properties, as well as on the local state of Co and Fe ions is discussed.

Original languageEnglish
Pages (from-to)852-860
Number of pages9
JournalSolid State Sciences
Volume11
Issue number4
DOIs
Publication statusPublished - Apr 1 2009

Keywords

  • CMR
  • GMR
  • Magnetic semiconductors
  • Mössbauer spectroscopy
  • Spin glass

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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  • Cite this

    József, H., de, D. C., Sándor, M., Kálmán, V., Zoltán, K., Zoltán, N., Erno, K., Zoltán, H., Attila, V., Athanassios, S., Eamonn, D., Yoshitaka, A., Hidetaka, K., & Subodh Kumar, D. (2009). Electronic transport and magnetic properties of the perovskites La0.8Sr0.2Co1-xFexO 3; x ≤ 0.3. Solid State Sciences, 11(4), 852-860. https://doi.org/10.1016/j.solidstatesciences.2009.01.002