Crystallographic features of electronic states in the highly-correlated electronic system Sr1-xSmxMnO3 around x = 0.50

Misato Yamagata, Yasuhide Inoue, Yasumasa Koyama

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    The highly-correlated electron system Sr1-xSmxMnO3 (SSMO) with the simple-perovskite structure has been found to exhibit fascinating electronic states accompanying antiferromagnetic and ferromagnetic orderings. It was, in particular, reported that the electronic state for 0.46 ≤ x ≤ 0.54 was characterized by the coexistence state consisting of the A-type antiferromagnetic and ferromagnetic states. However, the features of the coexistence state in this Sm-content range have not been understood yet. We have thus investigated the crystallographic features of prepared SSMO samples with 0.46 ≤ x ≤ 0.55, mainly by transmission electron microscopy. As a result, all prepared SSMO samples were first confirmed to have the orthorhombic-Pnma structure at 300 K. When the temperature was lowered from 300 K, in the case of x=0.47, the disordered-Pnma state was found to be transformed into an orbital-modulated (OM) state accompanying an incommensurate modulation. The notable feature of the OM state is that the state becomes unstable with increasing Sm contents at 100 K. In other words, the OM state was never changed into the CE-type state with the orbital and charge modulations. In addition, no orbital-ordered state for the A-type antiferromagnetic ordering was also found for 0.46 ≤ x ≤ 0.55.

    Original languageEnglish
    Title of host publicationTHERMEC 2016
    PublisherTrans Tech Publications Ltd
    Pages2158-2163
    Number of pages6
    Volume879
    ISBN (Print)9783035711295
    DOIs
    Publication statusPublished - 2017
    Event9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016 - Graz, Austria
    Duration: 2016 May 292016 Jun 3

    Publication series

    NameMaterials Science Forum
    Volume879
    ISSN (Print)02555476

    Other

    Other9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016
    CountryAustria
    CityGraz
    Period16/5/2916/6/3

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    Keywords

    • Coexistence state
    • Highly-correlated electronic material
    • SrSmMnO
    • Transmission electron microscopy

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

    Cite this

    Yamagata, M., Inoue, Y., & Koyama, Y. (2017). Crystallographic features of electronic states in the highly-correlated electronic system Sr1-xSmxMnO3 around x = 0.50. In THERMEC 2016 (Vol. 879, pp. 2158-2163). (Materials Science Forum; Vol. 879). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.879.2158