Open AccessVARYING TEMPERATURE RAMAN SCATTERING STUDIES OF 12 mol% Ce TETRAGONAL ZIRCONIA POLYCRYSTAL
Author(s) -
Cheng Guang-Xu,
Xingkui Zhang
Publication year - 1990
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.39.162
Subject(s) - tetragonal crystal system , materials science , monoclinic crystal system , raman scattering , raman spectroscopy , phase transition , brillouin zone , atmospheric temperature range , brillouin scattering , phonon , condensed matter physics , phase (matter) , transition temperature , crystal structure , crystallography , optics , chemistry , thermodynamics , physics , superconductivity , organic chemistry , optical fiber
Raman scattering studies have been carried out on 12 mol% Ce-Tetragonal Zirconia Poly-crystal over 50-800cm-1, and a range of temperature 17-505K, a phase transition was observed from the tetragonal-like to monoclinic-like phase at approximately 165±1K when the temperature was lowering. The reverse transition occurred at approximately 450±2K when the temperature was raising.In order to study the reason of this transition, the condensation of the phonons in Brillouin zone and possible phase transition have been carefully discussed.