Abstract
An estimation, based on thermodynamical considerations, of the pressure under which the NaCl crystal transforms into the metallic state, was carried out. Using the method of composite atomic orbitals, the thermodynamic potentials of dielectric and metallic phases of the NaCl crystal were calculated. The equations of state were obtained for both phases in a wide range of pressures, from 0 to 2000 kbar. From the point of intersection of the curves of thermodynamic potentials of two phases, the determination was made of the pressure of metallization equal to 1350 kbar. The temperature effects were not taken into account.
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Translated from Izvestiya VUZ, Fizika, No. 3, pp. 57–62, March, 1973.
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Zhdanov, V.A., Kuchin, V.A. & Polyakov, V.V. Metallization of alkali-halide crystals under superhigh pressures. Soviet Physics Journal 16, 333–337 (1973). https://doi.org/10.1007/BF00895422
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DOI: https://doi.org/10.1007/BF00895422