Peculiarities in the Vibrational Spectra of Cesium and Rubidium Nitrate Crystals in Its Low‐Temperature Phases
- 1 January 1970
- journal article
- research article
- Published by Wiley in Physica Status Solidi (b)
- Vol. 39 (1) , 33-38
- https://doi.org/10.1002/pssb.19700390105
Abstract
Polarized ir absorption spectra of CsNO3‐II and RbNO3‐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.Keywords
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