Determination of tetragonal-cubic phase boundary of Zr1-xRxO2-x/2 (R = Nd, Sm, Y, Er and Yb) by Raman scattering

Masatomo Yashima, Katsuya Ohtake, Masato Kakihana, Haruo Arashi, Masahiro Yoshimura

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195 Citations (Scopus)


Existing phases of arc-melted ZrO2-Xmol%RO1.5 specimens were investigated mainly by Raman spectroscopy, which is sensitive to the phase transition induced by the oxygen displacements (0≤X≤24) R = Nd, Sm, Y, Er and Yb). The tetragonal and monoclinic phases coexisted at X = 2 and 4 for R = Nd, Y, Er and Yb, and at X = 2 for R = Sm. Tetragonal single phase is obtained in the specimens with higher contents. The axial ratio c/a decreases with an increase of RO1.5 content and becomes unity at 14 or 16mol% RO1.5 content. The Raman peak intensity at about 470 cm-1, which is characteristic of the tetragonal phase, decreases with an increase of RO1.5 content. The cubic-tetragonal phase boundary determined by Raman scattering is located at about X = 18-19mol% regardless of dopant species R. A tetragonal phase whose axial ratio c/a is unity appears at about X = 16mol%. The compositional locations of the phase boundaries are almost independent of the dopant species R.

Original languageEnglish
Pages (from-to)17-24
Number of pages8
JournalJournal of Physics and Chemistry of Solids
Issue number1
Publication statusPublished - 1996 Jan
Externally publishedYes


  • A. ceramics
  • C. Raman spectroscopy
  • C. X-ray diffraction
  • D. crystal structure
  • D. phase transitions

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics


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