Elastic moduli of NaCl by Brillouin scattering at high pressure in a diamond anvil cell
- 1 August 1976
- journal article
- conference paper
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 47 (8) , 942-947
- https://doi.org/10.1063/1.1134778
Abstract
Instrumentation has been developed to conduct Brillouin scattering measurements on small (0.15 mm) transparent single crystals at hydrostatic pressures up to 35 kilobars in a gasketed diamond anvil cell. Phonon velocities obtained this way can be used to calculate elastic moduli as a function of pressure. Results of measurements made on NaCl yield zero‐pressure values of c11=4.82×1011 dyn cm−2, c12=1.28×1011 dyn cm−2, and c44=1.27×1011 dyn cm−2. The plots of the elastic moduli versus pressure are fitted with straight lines with the following slopes: ∂c11/∂P=11.62, ∂c12/∂P=3.05, and ∂c44/∂P=0.759.Keywords
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