A new tetragonal phase in La-rich Pr2-xLaxCuO4 (1.35 <x <1.5)

Y. Ikeda, K. Yamada, Y. Kusano, J. Takada

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    Comprehensive X-ray diffraction study on the sub-solidus phase diagram in Pr6O11-La2O3-CuO system firstly revealed a new phase of Pr2-xLaxCuO4 for 1.35 <x <1.5. The phase has a tetragonal symmetry similar to the well-known T′-type structure (0 <x <0.9). However, the lattice constants of both a and c are clearly distinct between the two tetragonal phases. The new phase coexists with the T′-phase for 0.9 <x <1.3 and with the orthorhombic T-phase for 1.5 <x <1.6. The sintered pellet of the new phase instantly transforms into fine powder (∼10 μm) upon cooling from synthesized temperature to room temperature without any compositional phase separation.

    Original languageEnglish
    Pages (from-to)395-398
    Number of pages4
    JournalPhysica C: Superconductivity and its Applications
    Volume378-381
    Issue numberPART 1
    DOIs
    Publication statusPublished - Oct 1 2002

    Fingerprint

    solidus
    pellets
    phase diagrams
    cooling
    symmetry
    room temperature
    diffraction
    Phase separation
    Powders
    Lattice constants
    Phase diagrams
    x rays
    Cooling
    X ray diffraction
    Temperature
    temperature

    Keywords

    • N-type cuprate
    • Phase separation
    • Pr-La-Cu-O system
    • T′-structure

    ASJC Scopus subject areas

    • Condensed Matter Physics

    Cite this

    A new tetragonal phase in La-rich Pr2-xLaxCuO4 (1.35 <x <1.5). / Ikeda, Y.; Yamada, K.; Kusano, Y.; Takada, J.

    In: Physica C: Superconductivity and its Applications, Vol. 378-381, No. PART 1, 01.10.2002, p. 395-398.

    Research output: Contribution to journalArticle

    Ikeda, Y. ; Yamada, K. ; Kusano, Y. ; Takada, J. / A new tetragonal phase in La-rich Pr2-xLaxCuO4 (1.35 <x <1.5). In: Physica C: Superconductivity and its Applications. 2002 ; Vol. 378-381, No. PART 1. pp. 395-398.
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