Lead free (K,Na)NbO3-based piezoelectric ceramics and transducers

Author

K. Kerman;M. Abazari;N. Marandian-Hagh;E. K. Akdogan;A. Safari

Author_Institution

The Glenn Howatt Electronci Ceramics Laboratory, Department of Materials Science & Engineering, Rutgers-The State University of New Jersey, Piscataway, 08854-8065, USA

Volume

3

fYear

2008

Firstpage

1

Lastpage

3

Abstract

Recent advances in (K,Na)NbO3-based ferroelectrics is reviewed, with special emphasis on the (K,Na)NbO3-LiTaO3-LiSbO3 system. Processing issues are elaborated on. The importance of precursor purity, moisture sensitivity and oxygen content on the dielectric and piezoelectric properties will be shown. Properties of prototype transducers are given and it will be shown that high performance metrics reminiscent to PZT-4 based transducers can be reached. Origins of high piezoelectric activity in the (K0.5Na0.5Li0.04)(Nb0.86Ta0.04Sb0.06)O3 is discussed, where it will be shown that this particular composition has a polymorphic phase transition in the vicinity of room temperature, and does not exhibit a morphotropic phase boundary..

Keywords

"Environmentally friendly manufacturing techniques","Ceramics","Piezoelectric transducers","Moisture","Ferroelectric materials","Prototypes","Temperature","Titanium compounds","Laboratories","Materials science and technology"

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 2008. ISAF 2008. 17th IEEE International Symposium on the

ISSN

1099-4734

Print_ISBN

978-1-4244-2744-4

Electronic_ISBN

2375-0448

Type

conf

DOI

10.1109/ISAF.2008.4693811

Filename

4693811