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Channel Model in Isotropic Exchange Theory (II)
Author(s) -
Eremin M. V.,
Kakitin Yu. V.
Publication year - 1977
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.2220820123
Subject(s) - heteronuclear molecule , isotropy , excited state , ion , exchange interaction , condensed matter physics , materials science , chemistry , physics , atomic physics , molecule , quantum mechanics , ferromagnetism
An extension is made of the exchange channel model suggested in previous communications. The relationships between exchange parameters are derived that take into account configuration interactions and are applicable to various pairs of ions in excited as well as ground states and with nonquenched as well as quenched orbital moments. Good agreement of the semiempirical theory developed with experiment is demonstrated for a number of solids with perovskite and rock‐salt‐type structures containing bivalent ion pairs. The theory is used to predict spin exchange parameters for various homo‐ and heteronuclear ion pairs linked by 180° bridges in perovskite and rock‐salt structures.