Infrared Lattice Spectra of α-Al2O3 and Cr2O3

Abstract
Infrared‐active lattice vibrational spectra of α‐Al2O3 and Cr2O3 have been investigated by reflection and transmission measurements on single crystal samples and also by transmission on Nujol mulled Cr2O3. Single‐crystal transmission data above 700 cm−1 have been assigned to combinations and overtones.