The lattice dynamics of 12 chalcopyrite type compounds CuAlS₂, CuGaS₂, CuInS₂, AgGaS₂, AgGaSe₂, AgInSe₂, ZnSiP₂, ZnGeP₂, CdSiP₂, CdGeP₂, CdSnP₂, and CdGeAs₂ have been investigated based on a rigid ion model. As the anisotropy of the dynamic charges is not very pronounced the calculations were done assuming isotropic charges. The calculated force constants, normal co-ordinates and potential energy distributions are compiled and discussed.

Keywords: chalcopyrites, lattice dynamics, rigid ion model, effective charges, force constants

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