Temperature Dependence of the Raman Spectra and Phase Transition of Zirconia

A newly constructed high-temperature Raman spectrometer was used to study the temperature-dependence Raman spectra (up
to 2023 K) and transformation of zirconia crystal. High-temperature Raman scattering is a useful tool in characterizing the different structures of zirconia and offers the possibility to identify the phase transformation. It shows that monoclinic zirconia transforms to tetragonal phase at about 1440 K during the process of increasing temperature, but shows a lower transformation temperature from tetragonal to monoclinic phase at about 1323 K while the temperature decreased.