1. Thermoluminescence studies of γ-irradiated nanocrystalline Y 3 Al 5 O 12.
- Author
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Shivaramu, N.J., Lakshminarasappa, B.N., Nagabhushana, K.R., Ramani, and Singh, Fouran
- Subjects
THERMOLUMINESCENCE ,YTTRIUM aluminum garnet ,X-ray diffraction ,SELF-propagating high-temperature synthesis ,THERMAL conductivity - Abstract
Nanocrystalline yttrium aluminum garnet (Y3Al5O12) is synthesized by combustion technique. The X-ray diffraction (XRD) pattern of 900 °C annealed sample revealed a cubic structure. The average crystallite size is found to be 20.5 nm. γ-irradiated Y3Al5O12exhibits two thermoluminescence (TL) glows: a prominent one with a peak at ∼410 K and another one with a peak at ∼575 K. It is found that the TL glow peak intensity at 410 K increases, while its glow peak temperature is almost steady with an increase in the γ-dose. The effect of the heating rate on the TL glow curve is studied. It is found thatTm1shifts towards higher temperature region while theIm1decreases with an increase in the heating rate. The TL glow curves are analyzed by Chen's peak shape method and the TL parameters are estimated. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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