Peculiarities in the Vibrational Spectra of Cesium and Rubidium Nitrate Crystals in Its Low-Temperature Phases

✍ Scribed by S. V. Karpov; A. A. Shultin

• Publisher: John Wiley and Sons
• Year: 1970
• Tongue: English
• Weight: 376 KB
• Volume: 39
• Category: Article
• ISSN: 0370-1972
• DOI: 10.1002/pssb.19700390105

✦ Synopsis

Abstract

Polarized ir absorption spectra of CsNO~3~‐II and RbNO~3~‐IV crystals have been investigated in the region of the fundamental vibrations of the nitrate ions at 80 and 300 °K as well as the Raman spectra of these crystals at room temperature. Apart from the local field effects and the Davydov splitting of some vibrational terms also a splitting due to the presence of several sets of molecules not related by symmetry in a unit cell was observed. These results agree with the more accurate data of X‐ray analysis of the crystal structure of the low‐temperature phases of cesium and rubidium nitrate.