Raman Scattering Study of Cubic–Tetragonal Phase Transition in Zr1−xCexO2 Solid Solution

Masatomo Yashima; Haruo Arashi; Masato Kakihana; Masahiro Yoshimura

doi:10.1111/j.1151-2916.1994.tb07270.x

Raman Scattering Study of Cubic–Tetragonal Phase Transition in Zr_1−xCe_xO₂ Solid Solution

Masatomo Yashima, Haruo Arashi, Masato Kakihana, Masahiro Yoshimura

Center for Exploration of New Inorganic Materials

Research output: Contribution to journal › Article › peer-review

427 Citations (Scopus)

Abstract

A structural phase transition between the cubic (space group, Fm3m) and tetragonal (space group, P4₂/nmc) phases in a zirconia–ceria solid solution (Zr_1−xCe_xO₂) has been observed by Raman spectroscopy. The cubic–tetragonal (c–t″) phase boundary in compositionally homogeneous samples exists at a composition X₀ (0.8 < X₀ < 0.9) at room temperature, where t″ is defined as a tetragonal phase whose axial ratio c/a equals unity. The axial ratio c/a decreases with an increase of ceria concentration and becomes 1 at a composition X′₀ (0.65 < X′₀ < 0.7) at room temperature. The sample with a composition between X₀ and X′₀ is t″ ZrO₂. By Raman scattering measurements at high temperatures, the tetragonal (t″) → cubic and cubic → tetragonal phase transitions occur above 400°C in Zr_0.2 Ce_0.8O₂ solid solution.

Original language	English
Pages (from-to)	1067-1071
Number of pages	5
Journal	Journal of the American Ceramic Society
Volume	77
Issue number	4
DOIs	https://doi.org/10.1111/j.1151-2916.1994.tb07270.x
Publication status	Published - 1994 Jan 1

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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title = "Raman Scattering Study of Cubic–Tetragonal Phase Transition in Zr1−xCexO2 Solid Solution",

abstract = "A structural phase transition between the cubic (space group, Fm3m) and tetragonal (space group, P42/nmc) phases in a zirconia–ceria solid solution (Zr1−xCexO2) has been observed by Raman spectroscopy. The cubic–tetragonal (c–t″) phase boundary in compositionally homogeneous samples exists at a composition X0 (0.8 < X0 < 0.9) at room temperature, where t″ is defined as a tetragonal phase whose axial ratio c/a equals unity. The axial ratio c/a decreases with an increase of ceria concentration and becomes 1 at a composition X′0 (0.65 < X′0 < 0.7) at room temperature. The sample with a composition between X0 and X′0 is t″ ZrO2. By Raman scattering measurements at high temperatures, the tetragonal (t″) → cubic and cubic → tetragonal phase transitions occur above 400°C in Zr0.2 Ce0.8O2 solid solution.",

author = "Masatomo Yashima and Haruo Arashi and Masato Kakihana and Masahiro Yoshimura",

year = "1994",

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AU - Yashima, Masatomo

AU - Arashi, Haruo

AU - Kakihana, Masato

AU - Yoshimura, Masahiro

PY - 1994/1/1

Y1 - 1994/1/1

N2 - A structural phase transition between the cubic (space group, Fm3m) and tetragonal (space group, P42/nmc) phases in a zirconia–ceria solid solution (Zr1−xCexO2) has been observed by Raman spectroscopy. The cubic–tetragonal (c–t″) phase boundary in compositionally homogeneous samples exists at a composition X0 (0.8 < X0 < 0.9) at room temperature, where t″ is defined as a tetragonal phase whose axial ratio c/a equals unity. The axial ratio c/a decreases with an increase of ceria concentration and becomes 1 at a composition X′0 (0.65 < X′0 < 0.7) at room temperature. The sample with a composition between X0 and X′0 is t″ ZrO2. By Raman scattering measurements at high temperatures, the tetragonal (t″) → cubic and cubic → tetragonal phase transitions occur above 400°C in Zr0.2 Ce0.8O2 solid solution.

AB - A structural phase transition between the cubic (space group, Fm3m) and tetragonal (space group, P42/nmc) phases in a zirconia–ceria solid solution (Zr1−xCexO2) has been observed by Raman spectroscopy. The cubic–tetragonal (c–t″) phase boundary in compositionally homogeneous samples exists at a composition X0 (0.8 < X0 < 0.9) at room temperature, where t″ is defined as a tetragonal phase whose axial ratio c/a equals unity. The axial ratio c/a decreases with an increase of ceria concentration and becomes 1 at a composition X′0 (0.65 < X′0 < 0.7) at room temperature. The sample with a composition between X0 and X′0 is t″ ZrO2. By Raman scattering measurements at high temperatures, the tetragonal (t″) → cubic and cubic → tetragonal phase transitions occur above 400°C in Zr0.2 Ce0.8O2 solid solution.

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JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

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Raman Scattering Study of Cubic–Tetragonal Phase Transition in Zr_1−xCe_xO₂ Solid Solution

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