Features of the Jahn-Teller displacements in LaTiO3

M. Arao, Y. Inoue, Yasumasa Koyama

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    Atomic displacements involved in a crystal structure of LaTiO3 have been investigated by means of transmission electron microscopy mainly at room temperature. Electron diffraction patterns taken from LaTiO3 were found to be characterized by the presence of the forbidden reflections for the Pnma structure. The extinction rule of these reflections including fundamental ones indicated that a space group of the crystal structure was determined to be P21/a with a monoclinic symmetry. A characteristic feature of the P21/a structure is that there exist the Jahn-Teller atomic displacement with q = 〈1/21/2 0〉c as well as the Jahn-Teller distortion. An additional displacement with q = 〈1/2 0 0〉c should also be needed.

    Original languageEnglish
    Pages (from-to)995-997
    Number of pages3
    JournalJournal of Physics and Chemistry of Solids
    Volume63
    Issue number6-8
    DOIs
    Publication statusPublished - 2002 Jun

    Fingerprint

    Crystal structure
    Jahn-Teller effect
    Electron diffraction
    Diffraction patterns
    crystal structure
    Transmission electron microscopy
    extinction
    diffraction patterns
    electron diffraction
    transmission electron microscopy
    symmetry
    room temperature
    Temperature

    Keywords

    • A. Electronic materials
    • A. Magnetic materials
    • C. Electron microscopy
    • D. Crystal structure

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

    Cite this

    Features of the Jahn-Teller displacements in LaTiO3 . / Arao, M.; Inoue, Y.; Koyama, Yasumasa.

    In: Journal of Physics and Chemistry of Solids, Vol. 63, No. 6-8, 06.2002, p. 995-997.

    Research output: Contribution to journalArticle

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    abstract = "Atomic displacements involved in a crystal structure of LaTiO3 have been investigated by means of transmission electron microscopy mainly at room temperature. Electron diffraction patterns taken from LaTiO3 were found to be characterized by the presence of the forbidden reflections for the Pnma structure. The extinction rule of these reflections including fundamental ones indicated that a space group of the crystal structure was determined to be P21/a with a monoclinic symmetry. A characteristic feature of the P21/a structure is that there exist the Jahn-Teller atomic displacement with q = 〈1/21/2 0〉c as well as the Jahn-Teller distortion. An additional displacement with q = 〈1/2 0 0〉c should also be needed.",
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