Effect of Electron Irradiation on the 77-K Band Gap of Rutile |
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| Authors: | M M Mikhailov |
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| Affiliation: | (1) Tomsk State University of Control Systems and Electronic Engineering, pr. Lenina 40, Tomsk, 634050, Russia |
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| Abstract: | The diffuse reflectance spectrum of powder TiO2 (rutile) is measured from 0.36 to 0.9  m at 77 K before and after electron irradiation. The 77-K band gap of rutile is determined to be 3.0–3.02 eV. Irradiation with 30-keV electrons to a fluence of 1017 cm–2 has no effect on the band gap of rutile. Reflectance data attest to the presence of two absorption bands near the intrinsic edge. The strength of these absorptions correlates with the radiation hardness of rutile. |
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