Abstract
The variation of the lattice parameters from room temperature to 1.100 °C have been studied for the chalcopyrite semiconductors, ZnSiPn2, ZnGeP2 and CdGeP2 using a high temperature X-ray camera. All three compounds show an increase in the tetragonal compression with temperature. The results are interpreted in terms of the thermal expansions of the II-V and IV-V bonds.
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