TY - JOUR
T1 - Determination of tetragonal-cubic phase boundary of Zr1-xRxO2-x/2 (R = Nd, Sm, Y, Er and Yb) by Raman scattering
AU - Yashima, Masatomo
AU - Ohtake, Katsuya
AU - Kakihana, Masato
AU - Arashi, Haruo
AU - Yoshimura, Masahiro
N1 - Funding Information:
Acknowledgements-This work wasi n part supportedb y the KanagawaA cademyo f Sciencea nd Technology,I ketani Science Foundation, and Grant-in-Aid Shourei-kenkyu 0775074f4o r FundamentaRl esearchf rom the Ministry of Education,S ciencea nd Culture.
PY - 1996/1
Y1 - 1996/1
N2 - 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.
AB - 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.
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U2 - 10.1016/0022-3697(95)00085-2
DO - 10.1016/0022-3697(95)00085-2
M3 - Article
AN - SCOPUS:0002627424
SN - 0022-3697
VL - 57
SP - 17
EP - 24
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
IS - 1
ER -