Photo- and thermoinduced color centers in TiO 2 ceramics

Using a cryostat chamber developed for a spectrophotometer equipped with an integrating sphere, we have studied color centers (CCs) in photochromic titanium dioxide ceramics induced by radiation in the UV and visible spectral ranges. The channel of CC formation and annihilation during reductive-oxidation treatment is revealed, and the effect of thermoinduced growth of CC absorption has been found.