Nagabhushana, K. R. and Lakshminarasappa, B. N. and Revannasiddaiah, D. and Singh, F. (2011) Luminescence studies on swift heavy ion irradiated nanocrystalline aluminum oxide. JOURNAL OF LUMINESCENCE, 131 (4). pp. 764-767.
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Pellets of nanocrystalline aluminum oxide synthesized by a combustion technique are irradiated with 120 MeV Au9+ ions for fluence in the range 5 x 10(11)-1 x 10(13) ions cm(-2). Two photoluminescence (PL) emissions, a prominent one with peak at similar to 525 nm and a shoulder at similar to 465 nm are observed in heat treated and Au9+ ion irradiated aluminum oxide. The 525 nm emission is attributed to F-2(2+)-centers. The PL intensity at 525 nm is found to increase with increase in ion fluence up to 1 x 10(12) ions cm(-2) and decreases beyond this fluence. Thermoluminescence (TL) of heat-treated and swift heavy ion (SHI) irradiated aluminum oxide gives a strong and broad TL glow with peak at similar to 610 K along with a weak shoulder at 500 K. The TL intensity is found to increase with Au9+ ion fluence up to 1 x 10(13) ions cm(-2) and decreases beyond this fluence. (C) 2010 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Nanocrystalline Al2O3; Swift heavy ions; Photoluminescence; Thermoluminescence |
| Subjects: | D Physical Science > Physics |
| Divisions: | Department of > Physics |
| Depositing User: | Users 23 not found. |
| Date Deposited: | 04 Jul 2019 09:54 |
| Last Modified: | 04 Jul 2019 09:54 |
| URI: | http://eprints.uni-mysore.ac.in/id/eprint/2530 |
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