57 Fe Mössbauer spectroscopy studies, following implantation of radioactive Mn, have been conducted on InP and n-and p-type InAs at temperatures above 300 K. The Mn ions are produced at the ISOLDE facility at CERN, ionized and accelerated to 60 keV energy and implanted with fluences of 30%) after implantation at room temperature. The asymmetric doublet dominates the …