Temperature dependence of the Raman lines of α-Al2O3

Abstract The temperature dependence of the frequencies and line-widths of the Raman active lattice modes of α-Al2O3 has been measured between 77° and 1200°K. The temperature dependence of the frequencies is compared with the results of Schauer based on a thermal expansion model and the temperature dependence of the linewidths is compared with the results from a simple two and three phonon decay model.