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The Pseudopotential Method and the Problem of Ordering in Alloys. II. Multi‐Ion Interaction
Author(s) -
Krasko G. L.,
Makhnovetskii A. B.
Publication year - 1974
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.2220660139
Subject(s) - pseudopotential , perturbation theory (quantum mechanics) , distortion (music) , ion , condensed matter physics , fermi gamma ray space telescope , statistical physics , materials science , physics , quantum mechanics , amplifier , optoelectronics , cmos
The problem of multi‐ion interaction in ordered alloys is considered. Khachaturyan's theory of ordering is modified to take into account this interaction. A pseudopotential approach is developed and a procedure suggested to calculate the “main” terms of third and fourth order perturbation theory including the effects of the Fermi‐surface distortion. Expressions are found for the thermodynamic characteristics of alloys in terms of pseudo‐potentials of ion‐components.