EVIDENCE OF CHEMICAL EFFECTS DUE TO IMPLANTATION OF 28 MEV DEUTERONS IN RUTILE

Optical and conductivity measurements have been made on rutile (TiO//2) samples implanted with 28 MeV deuterons and 56 MeV alpha particles. An assumption is proposed to explain the localization of the coloration at the end of the particles' paths: chemical reactions of implanted deuterons imply the formation of Ti** plus **3 sites, which is not the case with implanted alpha particles. The oscillator strength of 10** minus **3 , deduced from optical absorption profiles, for the optical transition of the 1. 35 mu m absorption band in chemically implanted rutile supports the assignment of a d-d transition localized at a Ti** plus **3 site for the ″blue″ band. The analysis of the distribution of conductivity along the particle path and infrared absorption measurements seem to conform this hypothesis.