Magnetic exchange interactions induced by Cr-doping in perovskite manganites

Chang Seop Hong, Nam Hwi Hur, Yong Nam Choi

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The effect of Cr-doping on the structural, magnetic and transport properties of perovskite manganites La0.8Ca0.2Mn 1-xCrxO3 (0≤x≤0.7) has been investigated. The Curie temperature (TC) of the Cr-doped samples is almost unchanged up to 30% of Cr-doping. The Cr-doped samples, however, undergo a transition from the parent metallic state to the insulating state below T C. The dc and ac magnetization data suggest that ferromagnetic clusters induced by double exchange interaction between Cr3+ and Mn3+ ions and antiferromagnetic components driven by Cr 3+/Mn4+ and Cr3+/Cr3+ interactions are present in the Cr-doped system, which is supported by comparative studies on magnetic and transport properties of LaMnO3+δ and LaMn 0.75Cr0.25O3+δ.

Original languageEnglish
Pages (from-to)531-536
Number of pages6
JournalSolid State Communications
Volume133
Issue number8
DOIs
Publication statusPublished - 2005 Feb

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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