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On the Stability of the Alkali Halide Lattices under Hydrostatic Pressure
Author(s) -
Vukcevich M. R.
Publication year - 1972
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.2220540207
Subject(s) - halide , alkali metal , hydrostatic pressure , thermodynamics , hydrostatic equilibrium , ionic bonding , stability (learning theory) , high pressure , phase (matter) , materials science , stability criterion , chemistry , physics , mathematics , inorganic chemistry , ion , computer science , quantum mechanics , organic chemistry , machine learning , statistics , discrete time and continuous time
The high‐pressure stability of the ionic cubic lattices is considered in terms of the recently proposed “combined stability criterion”. It appears now that the phase transformation in alkali halides takes place spontaneously once the high‐pressure CsCl‐polymorph becomes mechanically stable. The relation between the new criterion and the classical thermodynamics is discussed. New experiments are suggested in order to check some of the theoretical conclusions and predictions.