Lanthanum deficiency effect in magnetic transition and transport property of La0.8-δCa0.2Mno3

Chang Seop Hong, Nam Hwi Hur, Yong Nam Choi

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The evolution of magnetic and electrical phases in La 0.8-δCa0.2MnO3 was investigated in terms of La deficiency. We found that the increase of the La deficiency tends to raise the Curie temperature (TC) in La0.8-δCa 0.2MnO3. The FM clusters formed in compounds with large La deficiency provide percolation paths above TC. With increasing the La defect, the transport property changes from insulating to metallic state, which is in association with the crossover from a second order to a first order magnetic phase transition in the vicinity of TC.

Original languageEnglish
Pages (from-to)779-783
Number of pages5
JournalSolid State Communications
Volume131
Issue number12
DOIs
Publication statusPublished - 2004 Sep

Keywords

  • A. Magnetically ordered materials
  • A. Perovskite manganites
  • D. Colossal magnetoresistance

ASJC Scopus subject areas

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

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