ANNEALING BEHAVIOR OF ZNTE INVESTIGATED WITH CD-111M-EMISSION CHANNELING

The Emission Channeling technique has been used to study the annealing behavior of ZnTe implanted with different doses of Cd. Cd-111m ions o f 60 keV energy were implanted at 100 K into a single crystal sample a t the on-line isotope separator, ISOLDE, at CERN. Emission channeling measurements were performed along the [1 0 0] and [1 1 0] axial direct ions on the conversion electrons emitted in the Cd-111m decay. The tem perature at which practically complete lattice recovery is achieved in the neighbourhood of the implanted probes, with the probes on substit utional sites, was found to depend strongly on implantation dose. For an implantation dose of 1.3 x 10(13) Cd/cm(2) essentially full recover y of the lattice occurred at 500 K, while for a dose of 1.8 x 10(13) C d/cm(2) lattice recovery was achieved at 550 K, At a dose of 2.3 x 10( 13) Cd/cm(2) no recovery was observed up to a temperature of 550 K. (C ) 1998 Published by Elsevier Science B.V.