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Pressure and Temperature Dependence of the Raman Spectra of Zirconia and Hafnia
Author(s) -
Kourouklis Gerasimos A.,
Liarokapis Efthymios
Publication year - 1991
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1991.tb04054.x
Subject(s) - raman spectroscopy , tetragonal crystal system , phonon , hafnia , materials science , phase (matter) , phase transition , spectral line , condensed matter physics , analytical chemistry (journal) , cubic zirconia , chemistry , optics , composite material , physics , ceramic , organic chemistry , chromatography , astronomy
The pressure dependence of the phonon frequencies in the isomorphic materials ZrO 2 and HfO 2 , and the temperature dependence of the phonon frequencies of HfO 2 , were investigated by Raman spectroscopy in the ranges 0 to 16 GPa and 20 to 800 K. The comparison of the pressure dependence of the Raman spectra of the two materials helps to elucidate the correlation of their vibrations in the intermediate spectral region (240 to 410 cm −1 ). The high‐pressure phase of ZrO 2 is stable up to 16 GPa and of tetragonal symmetry. HfO 2 does not show any pressure‐induced phase transition up to 12 GPa, while the temperature effect on the phonon frequencies is similar to that of ZrO 2 .