| Issue |
Eur. Phys. J. AP
Volume 11, Number 1, July 2000
|
|
|---|---|---|
| Page(s) | 9 - 13 | |
| DOI | https://doi.org/10.1051/epjap:2000140 | |
| Published online | 15 July 2000 | |
https://doi.org/10.1051/epjap:2000140
Lead-free ferroelectric relaxor ceramics derived from BaTiO3*
Institut de Chimie de la Matière Condensée - CNRS, 87 avenue A. Schweitzer, 33608 Pessac, France
Corresponding author: jean.ravez@icmcb.u-bordeaux.fr
Received:
4
February
2000
Revised:
15
May
2000
Accepted:
15
May
2000
Published online: 15 July 2000
A large number of lead-free BaTiO3-based ceramics were prepared. Depending on the composition, some of them exhibit a relaxor behaviour whose characteristics were related to the type of ionic substitution and to the substitution rate. The relaxor effect is all the more favoured as the composition deviates more from BaTiO3 and as the substitution is heterovalent in the 6-coordination number crystallographic site. Some of these materials could prove valuable (dielectrics for capacitors and actuators) because they are environment-friendly.
PACS: 77.84.-s – Dielectric, piezoelectric, ferroelectric and antiferroelectric materials / 77.84.Dy – Niobates, titanates, tantalates, PZT ceramics, etc. / 77.22.Gm – Dielectric loss and relaxation
© EDP Sciences, 2000
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