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Title: Thermoluminescence, optically stimulated luminescence and ESR studies on LiAl<sub>5</sub>O<sub>8</sub>:Tb
Authors: Dhabekar, Bhushan
Raja, E Alagu
Rao, T K Gundu
Kher, R K
Bhatt, B C
Keywords: Thermoluminescence
Optically stimulated luminescence
Issue Date: Jun-2009
Publisher: CSIR
Abstract: <smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="PlaceType" downloadurl=""><smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="PlaceName" downloadurl=""><smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place" downloadurl=""> The LiAl<sub>5</sub>O<sub>8</sub>:Tb phosphor has been prepared by solution combustion synthesis. LiAl<sub>5</sub>O<sub>8</sub>:Tb shows two TL peaks at 160 and 330°C, respectively. Continuous Wave OSL (CW-OSL) of LiAl<sub>5</sub>O<sub>8</sub>:Tb phosphor is recorded. ESR studies have been carried out to identify defect centres responsible for TL peaks observed in LiAl<sub>5</sub>O<sub>8</sub>:Tb. Room temperature ESR spectra of irradiated LiAl<sub>5</sub>O<sub>8</sub>:Tb phosphor exhibit two distinct centres. The first ESR line is assigned to a V-centre. The second ESR line is assigned to F<sup>+</sup> centre. Both the ESR lines appear to correlate with the 160°C TL peak of<b style=""> </b>LiAl<sub>5</sub>O<sub>8</sub>:Tb phosphor. </smarttagtype></smarttagtype></smarttagtype>
Description: 426-428
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.47(06) [June 2009]

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