Elastic Constants of CsBr and CsI from 4.2°K to Room Temperature
- 1 April 1964
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 35 (4), 1222-1223
- https://doi.org/10.1063/1.1713597
Abstract
The elastic constants of pure single crystals of CsBr and CsI have been measured at liquid‐helium, liquid‐nitrogen, and room temperatures. For CsBr, the values of c11, c12, and c44 at 4.2°K are 3.437, 1.035, and 0.999 in units of 1010 N/m2. The corresponding values of CsI at 4.2°K are 2.737, 0.793, and 0.825·1010 N/m2. The elastic constants give the Debye temperature 148.8°K for CsBr and 125.6°K for CsI. The infrared resonance frequencies calculated from compressibility data are in agreement with those obtained from infrared spectroscopy.Keywords
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