Temperature Dependence of Optical Absorption near the Structural Phase Transition of Potassium Nitrate

✍ Scribed by R. Kawashima; K. Katsuki; K. Suzuki

• Publisher: John Wiley and Sons
• Year: 1985
• Tongue: English
• Weight: 530 KB
• Volume: 129
• Category: Article
• ISSN: 0370-1972
• DOI: 10.1002/pssb.2221290230

✦ Synopsis

Abstract

The electronic properties of a KNO~3~ crystal near the structural phase transition are investigated by observing ultraviolet absorption spectra. The spectra show an anomalous temperature dependence near the transition point T~tr~. The anomalous behaviour of the exponential absorption tails in the spectra is observed and discussed phenomenologically in relation to anomalies in the dielectric constant and lattice constant of KNO~3~.