Slip lines on crystals which had been plastically deformed, up to the lower yield point at about 700K, were studied. It was found that the slip lines differed from those in Si, in that the primary slip lines were wavy and the non-primary slip lines were long and straight. The former were similar to those found in crystals which were deformed below 400K, and suggested the glide motion of undissociated screw dislocations.

Cross-Slip in GaAs and InP at Elevated Temperatures. I.Yonenaga, T.Suzuki: Philosophical Magazine Letters, 2000, 80[8], 511-8