Evidence of chemical effects due to implantation of 28 mev deuterons in rutile

Abstract

Optical and conductivity measurements have been made on rutile (TiO₂) 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⁺³ sites, which is not the case with implanted alpha particles. The oscillator strength of 10⁻³, deduced from optical absorption profiles, for the optical transition of the 1.35 μm absorption band in chemically implanted rutile supports the assignment of a d–d transition localized at a Ti⁺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.