Features of structural phase transition in La1-xSrFeO 3

M. Mogi, Y. Inoue, M. Arao, Yasumasa Koyama

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    The structural phase transition in the insulating phase of La 1-xSrxFeO3 has been examined by X-ray powder diffraction. Based on the Rietveld analysis of the obtained profiles, the R3̄c-Pbnm structural transition was confirmed to take place in this oxide system. The interesting feature of the transition is that it is characterized by the appearance of the antiferroelectric displacement of the La/Sr atom, in addition to the change in the rotational-displacement pattern, R 25 x+R25 y+R25 z→R25 x+R25 y+M 3 z. It is thus understood that the low-temperature Pbnm phase can be identified as an antiferroelectric phase in oxides having a simple perovskite structure.

    Original languageEnglish
    Pages (from-to)295-299
    Number of pages5
    JournalPhysica C: Superconductivity and its Applications
    Volume392-396
    Issue numberPART 1
    DOIs
    Publication statusPublished - 2003 Oct

    Fingerprint

    Oxides
    Phase transitions
    Rietveld analysis
    Perovskite
    X ray powder diffraction
    oxides
    Atoms
    profiles
    diffraction
    Temperature
    atoms
    x rays
    perovskite

    Keywords

    • LaSrFeO
    • Rietveld refinement
    • Structural phase transition
    • Transition temperature
    • X-ray powder diffraction

    ASJC Scopus subject areas

    • Condensed Matter Physics

    Cite this

    Features of structural phase transition in La1-xSrFeO 3 . / Mogi, M.; Inoue, Y.; Arao, M.; Koyama, Yasumasa.

    In: Physica C: Superconductivity and its Applications, Vol. 392-396, No. PART 1, 10.2003, p. 295-299.

    Research output: Contribution to journalArticle

    Mogi, M. ; Inoue, Y. ; Arao, M. ; Koyama, Yasumasa. / Features of structural phase transition in La1-xSrFeO 3 In: Physica C: Superconductivity and its Applications. 2003 ; Vol. 392-396, No. PART 1. pp. 295-299.
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    AB - The structural phase transition in the insulating phase of La 1-xSrxFeO3 has been examined by X-ray powder diffraction. Based on the Rietveld analysis of the obtained profiles, the R3̄c-Pbnm structural transition was confirmed to take place in this oxide system. The interesting feature of the transition is that it is characterized by the appearance of the antiferroelectric displacement of the La/Sr atom, in addition to the change in the rotational-displacement pattern, R 25 x+R25 y+R25 z→R25 x+R25 y+M 3 z. It is thus understood that the low-temperature Pbnm phase can be identified as an antiferroelectric phase in oxides having a simple perovskite structure.

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