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On Lattice Parameters and Enthalpies of Mixing of Alkali Halide Solid Solutions
Author(s) -
Königsberger E.,
Schrunner H.
Publication year - 1989
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.2221510112
Subject(s) - halide , alkali metal , lattice (music) , solid solution , thermodynamics , mixing (physics) , materials science , statistical physics , chemistry , physics , inorganic chemistry , quantum mechanics , metallurgy , acoustics
Abstract A simple unified approach to the calculation of enthalpies of mixing and deviations of lattice parameters from Vegard's rule is presented. No experimental information about the solid solution is required and the results are insensitive to small experimental errors of the relevant parameters ( r , x ) of the pure components. In many cases this model is superior to more sophisticated theories in reproducing experimental data of mixed crystals. The main shortcomings of these theories with respect to lattice spacings are discussed.