Abstract
Sintered disks of TiO2 (rutile) have been exposed to the beam of a 355 nm laser. X-ray photoelectron spectroscopy studies show that the strong energy deposition at the surface is responsible for the formation of Ti3+ ions down to a depth of 0.4 μm. The presence of these ions produces a large decrease in the electrical resistivity from 109 Ω cm in nonirradiated TiO2 to 10 Ω cm after laser treatment. Temperature dependent resistance measurements indicate that the creation of Ti3+ ions leads to the formation of energy levels in the gap and to a hopping-driven conduction at room temperature.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 9:47 a.m.) |
Deposited | 1 year, 7 months ago (Feb. 2, 2024, 9:13 a.m.) |
Indexed | 1 year, 7 months ago (Feb. 2, 2024, 9:41 a.m.) |
Issued | 30 years, 11 months ago (Sept. 15, 1994) |
Published | 30 years, 11 months ago (Sept. 15, 1994) |
Published Print | 30 years, 11 months ago (Sept. 15, 1994) |
@article{Le_Mercier_1994, title={Near-surface defects created by 355 nm laser irradiation of rutile}, volume={76}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.357457}, DOI={10.1063/1.357457}, number={6}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Le Mercier, T. and Quarton, M. and Fontaine, M.-F. and Hague, C. F. and Mariot, J.-M.}, year={1994}, month=sep, pages={3341–3346} }