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Synthesis and characterisation of lead magnesium niobate having exceptionally high dielectric constant

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Title Synthesis and characterisation of lead magnesium niobate having exceptionally high dielectric constant
 
Creator GUPTA, SM
HARENDRANATH, CS
KULKARNI, AR
 
Subject pb(mg1/3nb2/3)o3
microstructure
powder
 
Description Exceptionally high dielectric constant, approximate to 28,000 (1 kHz) at T-c (-18 degrees C) has been achieved in stoichiometric lead magnesium niobate (PMN) ceramics prepared by partial oxalate route. Sintering at 1300 degrees C for 2 h in closed alumina crucible resulted in a highly dense PMN sample. Dielectric measurements with frequency showed a typical relaxer behaviour. Microstructure investigation along with electron probe microanalysis (EPMA) provide interesting clues to the observed material behaviour. Apart from grain size and density, lead oxide distribution controls the dielectric properties. (C) 1997 Elsevier Science Limited and Techna S.r.l.
 
Publisher ELSEVIER SCI LTD
 
Date 2011-07-22T14:44:08Z
2011-12-26T12:52:28Z
2011-12-27T05:38:05Z
2011-07-22T14:44:08Z
2011-12-26T12:52:28Z
2011-12-27T05:38:05Z
1997
 
Type Article
 
Identifier CERAMICS INTERNATIONAL, 23(3), 191-196
0272-8842
http://dx.doi.org/10.1016/S0272-8842(96)00011-9
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6263
http://hdl.handle.net/10054/6263
 
Language en