Temperature Dependence of the Raman Spectrum in Lithium Oxide Single Crystal

Temperature dependence of the Raman spectrum of lithium oxide single crystal has been measured over a temperature range of 80 to 1073 K. The frequency shift and the line width of the Raman spectrum in lithium oxide were about 531 and 4.5 cm ‐1 at 80 K, respectively. At 1073 K, the frequency shift and the line width attained the values of 464 and 112 cm ‐1 , respectively. The strong temperature dependence of the frequency shift and line width was compared with data from some crystals with a fluorite structure.