Anton M. Heyns and Peter M. Harden The temperature dependence of the Raman spectra of chromium-doped titanite (CaTiOSiO4) Journal of Raman Spectroscopy 44
The antiferroelectric–paraelectric phase transition in Cr4+-doped titanite was studied with resonance Raman spectroscopy by varying the sample temperature. The Cr–O Raman bands are shown between 700 and 1300 cm−1 including three Si–O bands indicated with green arrows. In the insert of the figure, a plot of the intensity of the Cr–O symmetric stretching mode against the monoclinic angle β at various temperatures illustrates the occurrence of the phase transition at ~500 K as well as an anomaly existing between ~450 and 500 K.
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