Magnetic exchange interactions induced by Cr-doping in perovskite manganites

Chang Seop Hong, Nam Hwi Hur, Yong Nam Choi

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    17 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

    Bibliographical note

    Copyright:
    Copyright 2008 Elsevier B.V., All rights reserved.

    Keywords

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

    ASJC Scopus subject areas

    • General Chemistry
    • Condensed Matter Physics
    • Materials Chemistry

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