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Thermoluminescence and defect study of MgSiO3 ceramics

DSpace at IIT Bombay

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Title Thermoluminescence and defect study of MgSiO3 ceramics
 
Creator NAGABHUSHANA, H
NAGABHUSHANA, BM
UMESH, B
PREMKUMAR, HB
ANIL, N
RAO, TKG
CHAKRADHAR, RPS
 
Subject forsterite
phosphor
esr
ceramics
luminescence
enstatite
gamma irradiation
esr
 
Description 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.
 
Publisher TAYLOR & FRANCIS LTD
 
Date 2011-08-31T06:44:05Z
2011-12-26T12:59:24Z
2011-12-27T05:51:26Z
2011-08-31T06:44:05Z
2011-12-26T12:59:24Z
2011-12-27T05:51:26Z
2010
 
Type Article
 
Identifier PHILOSOPHICAL MAGAZINE, 90(12), 1567-1574
1478-6435
http://dx.doi.org/10.1080/14786430903413367
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12616
http://hdl.handle.net/10054/12616
 
Language en