Studies of the Optical Absorption Spectrum of Rutile Single Crystals

摘要

The optical absorption of single crystals of synthetic rutile was investigated in the spectral range from 1200 to 25,000 cm-1 and from room temperature to 1000℃.nThe electronic absorption exhibits dichroic behavior. The edge moves toward lower energies as temperature is increased, with the shift depending upon the absorption coefficient;for a decadic absorption coefficient (α’) of 400 cm-1 the shift is 7.1 × 10-4 ev/°K, while at 1 cm-1 it is 9.5 × 10-4 ev/°K.