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Influence de l'ajout de BaLif3 sur les proprietes cristalliongraphiques et dielectriques de BaTiO3 by A. Benziada-Taibi; J. Ravez; P. Hagenmuller is a Chemistry article available to read on EtoBox.

What is Influence de l'ajout de BaLif3 sur les proprietes cristalliongraphiques et dielectriques de BaTiO3 about?

The study of the BaTi03-BaLiF3 system in platinium-sealed tubes has allowed one to determine the influence of the addition of BaLiF 3 on the crystallographic and dielectric properties of BaTiO3. The ferroelectric Curie temperature decreases as the rate of substitution increases. A ceramic with a composition Ba(Ti 0.965Li0.035)02.895F0.105 has a Curie temperature Tc close to 280 K. The corresponding maximum of the permittivity E'~ may '. at Tc increases from 1000 to 5600 when the sintering temperature rises from 850 to 13OO'C. This enhancement has been compared with that observed for a ceramic sintered from BaTiO 3 and LiF at 930°C (E' r max. > 6000). It appears that the sintering process in that case cannot be due mainly to formation of a solid solution between BaTi03 and BaLiFj.

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Author

A. Benziada-Taibi; J. Ravez; P. Hagenmuller

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0022-1139)

Published

1984

Language

FR

Field

Chemistry (Physical Sciences)