Lattice-dynamical analysis reveals vibrational band assignments and soft mode dynamics across zirconia and hafnia crystal phases, suggesting revised structural interpretations.
An interpretation of the Raman spectra of monoclinic ZrO 2 and monoclinic HfO 2 is made by analyzing the results of the zirconia–hafnia substitution jointly with a lattice dynamical treatment of both structures. The Raman spectra of tetragonal ZrO 2 and tetragonal HfO 2 are also interpreted. Emphasis is put on their relations to the spectrum of the parent cubic structure and on the position of the soft mode. The band assignment proposed earlier by other researchers is critically reconsidered.
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Quintard et al. (2002) studied this question.
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