Substrate influence on the ferroelectric properties of PTCa thin films.

Authors
Jimenez, R Poyato, R Pardo, L Alemany, C Mendiola, J
Citation
R. Jimenez et al., Substrate influence on the ferroelectric properties of PTCa thin films., B S ESP CER, 38(5), 1999, pp. 482-486
Citations number
16
Categorie Soggetti
Material Science & Engineering
Journal title
BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO
ISSN journal
03663175 → ACNP
Volume
38
Issue
5
Year of publication
1999
Pages
482 - 486
Database
ISI
SICI code
0366-3175(199909/10)38:5<482:SIOTFP>2.0.ZU;2-R
Abstract
The ferroelectric properties of calcium modified lead titanate (Pb0.76Ca0.2 4)TiO3 (PTCa) thin films prepared by a sol - gel method with successive cry stallisations on three different substrates (A) Pt / Ti / SiO2 / Si (100), (B) Ti / Pt / Ti / SiO2 / Si(100) y (C) Pt / TiO2 / SiO2/Si (100), have bee n studied. The results of the ferroelectric characterisation show values of the spontaneous pyroelectric coefficient close to = 5.10(-9) C cm(-2) K-1. The low switching properties favour the stabilisation in time of the pyroe lectric coefficient value. A latter annealing thermal treatment (650 degree s C 1h) produces changes in the ferro - piezoelectric properties that can b e related with changes in the texture of the films.