Abstract
AbstractEPR spectra on a colorless single crystal of anatase titanium dioxide have sextuplet signals under irradiation of ultra violet (uv) light at temperatures of 100‐40 K. The sextuplet is assigned to a paramagnetic species of S = 1/2 interacting with I = 5/2. The angular dependence of the sextuplet signals reveals anisotropic g ‐values of gxx = 2.026, gyy = 2.002 and gzz = 2.015. The intensities of the sextuplets reduce gradually with decrease in temperature. Only one signal can be observed at temperatures lower than 30K. This signal will originate from Ti3+ in bulk. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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