Raman spectrum of zirconia-hafnia mixed crystals

1 February 1992

journal article
Published by American Physical Society (APS) in Physical Review B

Vol. 45 (5) , 2079-2084
https://doi.org/10.1103/physrevb.45.2079

Abstract

Monoclinic crystals of ZrxHf1−xO2 were grown by heating the layered structures ZrxHf1−xS2 in a pure oxygen atmosphere at 800 °C for 2 h (x=0, 0.1, 0.25, 0.5, 0.75, 0.9, and 1.0). Their Raman spectra were recorded at 15 and 300 K. The 18 modes predicted by group theory were identified in ZrO2 and their evolution with x was determined. At 15 K, seven phonons show distinct two-mode behavior, while others are characterized by discontinuities, either at x=0.6 or x=0.3. This latter observation is reminiscent of percolation-type phenomena.

Keywords

This publication has 7 references indexed in Scilit:

Resonance Raman spectrum of ${HfS}_{2}$ and ${ZrS}_{2}$
Physical Review B, 1988
Linewidths from sum rules in mixed crystals
Physical Review B, 1986
Effect of metal substitution in ${ZrSe}_{3}$ -type compounds: Vibrational states of ${Zr}_{1 - t}$ ${Hf}_{t}$ $S_{3}$
Physical Review B, 1985
Introduction to Percolation Theory
Published by Taylor & Francis ,1985
Raman spectroscopic studies of the polymorphism in ZrO2 at high pressures
Physica Status Solidi (a), 1982
Lattice dynamics and light scattering in Hafnia and Zirconia
Journal of Physics and Chemistry of Solids, 1975
The crystal structure of baddeleyite (monoclinic ZrO2)
Acta Crystallographica, 1959