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Theoretical Studies on Z 1 ‐Bands in Alkali Halide Crystals
Author(s) -
Cheung T. H.,
Wang S.
Publication year - 1967
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.19670240213
Subject(s) - halide , impurity , alkali metal , vacancy defect , polaron , ion , atom (system on chip) , doping , valence (chemistry) , divalent , chemistry , atomic physics , electron , condensed matter physics , crystallography , materials science , physics , inorganic chemistry , quantum mechanics , organic chemistry , computer science , embedded system
The absorption energies and the oscillator strengths of Z 1 ‐bands in the calcium doped crystals are theoretically investigated. The calculation is done by using both the polaron model of electron‐excess centers and the valence‐electron models of atom. The numerical results are given for both the substitutional model and the Bushnell model. These results give an additional support to the general suggestion of Bushnell and lead to the conclusion that the Z 1 ‐band may be considered as the F‐band perturbed by the complex consisting of a positive‐ion vacancy and a divalent impurity.