Nagabhushana, H and Nagabhushana, B M and Umesh, B and Premkumar, H B and Anil, Nalina and Rao, T K Gundu and Chakradhar, R P S (2010) Thermoluminescence and defect study of MgSiO3 ceramics. Philosophical Magazine, 90 (12). pp. 1567-1574. ISSN 1478-6435

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Abstract

Enstatite (MgSiO3) ceramic powders were synthesised by a low-temperature initiated self-propagating, gas-producing solution combustion process. The prepared powders were characterised by powder X-ray diffraction, scanning electron microscopy and Brunauer-Emmer-Teller specific surface area measurements. Defect centres induced by radiation were studied using the techniques of thermoluminescence (TL) and electron spin resonance (ESR). A well-resolved glow with peak at 178 degrees C and a shouldered peak at 120 degrees C were observed. Two defect centres were identified by ESR measurements, which were carried out at room temperature, and these were assigned to an O- ion and F+ centre. The O- ion (hole centre) appears to correlate with the main TL peak at 178 degrees C.

Item Type:	Article
Uncontrolled Keywords:	Ceramics; Luminescence; Enstatite; gamma irradiation; ESR
Subjects:	Engineering Materials
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	14 Feb 2012 12:40
Last Modified:	29 Mar 2016 06:55
URI:	http://cgcri.csircentral.net/id/eprint/823

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