B-site ordering induced suppression of magnetic cluster glass and dielectric anomaly in La 2-xBi xCoMnO 6

Yijia Bai, Xiaojuan Liu, Yanjie Xia, Hongping Li, Xiaolong Deng, Lin Han, Qingshuang Liang, Xiaojie Wu, Zhongchang Wang, Jian Meng

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    10 Citations (Scopus)

    Abstract

    We report the heat, magnetic, and dielectric properties of La 2-xBi xCoMnO 6 with a series of Bi doping concentrations, focusing especially on the impact of A-site doping on B-site ordering. We demonstrate that the B-site ordering is enhanced via the Bi doping, resulting in a suppressed cluster-glass behavior, larger dielectric constant, and smaller tangent loss. Surprisingly, a pronounced step-like dielectric anomaly turns up near the spin-freezing temperature in the Bi-free oxide, which is suppressed significantly after Bi doping. We attribute the suppression of anomaly to the lessened amount of antisite defects at the B sites and the associated strengthened electronic localization.

    Original languageEnglish
    Article number222907
    JournalApplied Physics Letters
    Volume100
    Issue number22
    DOIs
    Publication statusPublished - 2012 May 28

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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