Abstract
The pulsed ultrasonic method is used for studying polycrystalline cesium under a pressure up to 5 GPa. Elastic parameters and compression ratio of cesium are determined and anomalies in the elastic properties of cesium during phase transitions CsI-CsII-CsIII-CsIV are revealed. It is found that the CsII-CsIII electron-structure transformation is preceded by anomalous compressibility of the fcc phase of cesium and by softening of longitudinal and transverse acoustic modes of the cesium phonon spectrum.
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Translated from Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 122, No. 1, 2002, pp. 90–96.
Original Russian Text Copyright © 2002 by Voronov, Stal’gorova, Gromnitskaya.
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Voronov, F.F., Stal’gorova, O.V. & Gromnitskaya, E.L. Anomalies in the variation of elastic properties of cesium during phase transformations under a pressure up to 5 GPa. J. Exp. Theor. Phys. 95, 77–82 (2002). https://doi.org/10.1134/1.1499904
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DOI: https://doi.org/10.1134/1.1499904