Direct observation of cationic ordering in double perovskite Sr 2FeReO6 crystals

Si Young Choi, Jong Bong Lim, Yuichi Ikuhara, Danilo Suvorov, Jae Ho Jeon

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    Two kinds of Sr2FeReO6 (SFRO) samples, pristine SFRO and Re-excess SFRO, were prepared and we visualized the local atomic structure in terms of cationic ordering in the prepared SFRO samples via high-angle annular dark-field (HAADF) scanning transmission electron microscopy (STEM). HAADF-STEM results demonstrated the high degree of cationic ordering maintains in both the pristine SFRO and Re-excess SFRO samples. On the other hand, defective structures such as antiphase boundary and Re-deficient phase were observed dominantly in the pristine SFRO, and thus the poor magnetic property in the pristine SFRO is attributed to those defective structures related with the frustrated Fe/Re ordering.

    Original languageEnglish
    Pages (from-to)25-28
    Number of pages4
    JournalMicroscopy and Microanalysis
    Volume19
    Issue numberSUPPL. 5
    DOIs
    Publication statusPublished - 2013 Aug

    Keywords

    • cationic ordering
    • double perovskite
    • high-angle annular dark-field
    • scanning transmission electron microscopy

    ASJC Scopus subject areas

    • Instrumentation

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