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Equation for the Melting Curve of Solids under High Pressure
Author(s) -
Boguslavskii Yu. YaL
Publication year - 1982
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221090115
Subject(s) - thermodynamics , melting curve analysis , melting point , chemistry , alkali metal , argon , volume (thermodynamics) , physics , polymerase chain reaction , biochemistry , organic chemistry , gene
Simon's equation of the melting curve is obtained using the Clausius‐Clapeyron equation in the linear approximation of the pressure dependence of the melting entropy and the volume change at the melting point. The constants in Simon's equation are calculated in this approximation for the alkali metals Li, Na, K, Rb, Cs and also for hydrogen, H 2 , and argon. It is shown that one can obtain the constants of Simon's equation in a pressure range which is wider than the region of the thermodynamical validity of Simon's equation by averaging the values of the constants determined in different points of the melting curves. The constants obtained by this manner agree well with the experimental data.