Abstract
The deformation characteristics of indium phosphide (InP) single crystals under uniaxial compression have been examined as a function of strain rate, temperature and orientation. It has been shown that at temperatures below 0.55Tm (Tm=melting point; 1335 K) the material fractures in a brittle manner whereas at higher temperatures, within the range 0.55 to 0.71Tm, plastic deformation occurs by both slip and deformation twinning; above 0.71Tm, slip alone is the operative deformation mechanism. The observed operative slip systems are of the type {1 1 1} 〈0 1 1〉 which are characteristic of most Group IIIb-Group Vb compounds. Deformation twinning occurs predominantly on {1 1 1} planes but some activity is also observed on planes of the type {3 4 5}.
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