Structural changes of scandia-doped zirconia solid solutions: Rietveld analysis and Raman scattering

Hirotaka Fujimori, Masatomo Yashima, Masato Kakihana, Masahiro Yoshimura

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    82 Citations (Scopus)

    Abstract

    Powder X-ray diffractometry (XRD) and Raman scattering measurements were used to study the structural changes of compositionally homogeneous metastable ZrO2 solid solutions induced by ScO1.5 doping. The crystal structures of monoclinic, tetragonal, cubic, and rhombohedral (Sc2Zr7O17, β-phase) solid-solution phases have been refined by using the Rietveld analysis of the XRD data at room temperature of arc-melted ZrO2-XScO1.5 (X = 0, 2, . . . , 20, and 22 mol%) samples. The results can be interpreted as indicating that the structures of the monoclinic and tetragonal phases approach those of the tetragonal and cubic phases, respectively, by ScO1.5 doping. Raman scattering, as well as XRD, was useful to investigate the phase assemblage. Moreover, we could obtain Raman spectra of the β-phase probably for the first time.

    Original languageEnglish
    Pages (from-to)2885-2893
    Number of pages9
    JournalJournal of the American Ceramic Society
    Volume81
    Issue number11
    DOIs
    Publication statusPublished - 1998 Nov

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Materials Chemistry

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