PROCESSING AND CHARACTERIZATION OF SOL-GEL DERIVED MODIFIED PBTIO3 FOR FERROELECTRIC COMPOSITE APPLICATIONS

Authors
IGREJA R DIAS CJ MARATMENDES JN
Citation
R. Igreja et al., PROCESSING AND CHARACTERIZATION OF SOL-GEL DERIVED MODIFIED PBTIO3 FOR FERROELECTRIC COMPOSITE APPLICATIONS, JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 8(1-3), 1997, pp. 721-723
Citations number
8
Categorie Soggetti
Material Science
Journal title
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY → ACNP
ISSN journal
09280707
Volume
8
Issue
1-3
Year of publication
1997
Pages
721 - 723
Database
ISI
SICI code
0928-0707(1997)8:1-3<721:PACOSD>2.0.ZU;2-N
Abstract
Powders of (Pb0.8Ca0.2)(Ti0.99Mn0.01)O-3 have been prepared by sol-gel processing. A tetragonal phase is formed after heat treatment at as l ow as 800 degrees C. The tetragonality was found to be 1.053 +/- 0.005 and Curie temperature 315 degrees C. Composite films with 0-3 connect ivity were prepared from 800 degrees C heat treated powders and P(VDF- TrFE) by the solvent casting technique. Composites poled at 20 MV/m, e xhibited a pyroelectric coefficient of 17.4 mu C/m(2)K and a pyroelect ric figure of merit (FOM(p) = p/epsilon) of 0.51 mu C/m(2)K.