Optical absorption spectra of 10-MeV electron-irradiated paratellurite single crystals
Optical absorption spectra of TeO 2 crystals, irradiated at room temperature by up to 2·10 18 cm −2 10-MeV electrons and subsequently annealed to 575K, are studied. The dependence of Urbach absorption edge parameters in TeO 2 on the electron beam fluence is discussed. The irradiation-induced near-ed...
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Published in | Radiation effects and defects in solids Vol. 153; no. 3; pp. 205 - 210 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
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Taylor & Francis Group
01.02.2001
Taylor and Francis |
Subjects | |
Online Access | Get full text |
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Summary: | Optical absorption spectra of TeO
2
crystals, irradiated at room temperature by up to 2·10
18
cm
−2
10-MeV electrons and subsequently annealed to 575K, are studied. The dependence of Urbach absorption edge parameters in TeO
2
on the electron beam fluence is discussed. The irradiation-induced near-edge broad (2.5-3.5eV) absorption band is shown to be related to oxygen vacancies, annealing at 475-525K. |
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ISSN: | 1042-0150 1029-4953 |
DOI: | 10.1080/10420150108211839 |