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Interatomic force constants of zero-gap semiconductors (β-HgS, HgSe, and HgTe) were calculated by the modified valence-force-field approach. The application of this model to these materials was not as satisfying as in other zincblende crystals. However, the regularities in the elastic constants of these compounds are excellently explained by the Phillips ionicity as well as those of other tetrahedrally coordinated semiconductors. The elastic characteristics of Hg chalcogenides are very similar to those of Zn chalcogenides and CdTe.
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K. Kumazaki (1976) studied this question.
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