Title :
Field-induced phase transitions in Bismuth-based perovskites: A new approach to lead-free high-strain piezoceramics
Author :
Granzow, T. ; Zhang, S.T. ; Kounga, A.B. ; Jo, W. ; Rödel, J.
Author_Institution :
Department of Materials Science, Technische Universitÿt Darmstadt, Petersenstrasse 23, 64287, Germany
Abstract :
The ferroelectric and piezoelectric properties of solid solutions containing various phase fractions of bismuth sodium titanate, barium titanate and potassium sodium niobate are investigated at different temperatures. It is possible to obtain very high strain in these materials near their respective depolarization temperature. The origin of this high strain is the combination of the piezoelectric effect with a field-induced phase transition from a low-field antiferroelectric to a high-field ferroelectric phase.
Keywords :
Barium; Bismuth; Capacitive sensors; Environmentally friendly manufacturing techniques; Ferroelectric materials; Niobium compounds; Piezoelectric materials; Solids; Temperature; Titanium compounds;
Conference_Titel :
Applications of Ferroelectrics, 2008. ISAF 2008. 17th IEEE International Symposium on the
Conference_Location :
Santa Re, NM, USA
Print_ISBN :
978-1-4244-2744-4
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2008.4693813
