Pressure and temperature dependence of the Raman spectra of zirconia and hafnia

Journal Article · Thu Feb 28 23:00:00 EST 1991 · Journal of the American Ceramic Society; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1991.tb04054.x· OSTI ID:5156839

Kourouklis, G A ^[1]; Liarokapis, E ^[2]

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1. Dept. of Physics, School of Technology, Aristotle Univ. of Thessaloniki, Thessaloniki 54006 (GR)
2. Physics Dept., National Technical Univ., Zografou Campus, Athens 15773 (GR)

The pressure dependence of the phonon frequencies in the isomorphic materials ZrO{sub 2} and HfO{sub 2}, and the temperature dependence of the phonon frequencies of HfO{sub 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 A(240 to 410 cm{sup {minus}1}). The high-pressure phase of ZrO{sub 2} is stable up to 16 GPa and of tetragonal symmetry. HfO{sub 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{sub 2}.

• OSTI ID: 5156839
• Journal Information: Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 74:3; ISSN 0002-7820; ISSN JACTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
CHALCOGENIDES
HAFNIUM COMPOUNDS
HAFNIUM OXIDES
LASER SPECTROSCOPY
OXIDES
OXYGEN COMPOUNDS
PRESSURE DEPENDENCE
RAMAN SPECTRA
RAMAN SPECTROSCOPY
REFRACTORY METAL COMPOUNDS
SPECTRA
SPECTROSCOPY
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES