Dielectric and Piezoelectric Properties of NaNbO3 - BaTiO3 - SrTiO3 Ceramics

Author

Kusumoto, Keiji

Author_Institution

Nat. Inst. of Adv. Ind. Sci. & Technol., Nagoya

fYear

2007

fDate

27-31 May 2007

Firstpage

686

Lastpage

687

Abstract

NaNbO₃ -based piezoelectric ceramics NaNbO₃ - BaTiO₃ - SrTiO₃ have been synthesized by conventional solid state sintering method, and their dielectric and piezoelectric properties have been studied. The dielectric, piezoelectric, and electromechanical properties of 0.88NaNbO₃ - 0.11BaTiO₃ -0.01SrTiO₃ ceramics were found to be the cubic-tetragonal phase transition temperature (Tc)= 220degC, the orthorhombic-tetragonal phase transition temperature (Tot)= -60degC, dielectric constant epsivs=917, piezoelectric coefficient d33=118 pC/N, and electromechanical coupling factor kp=0.27. The ceramics is a good candidate material for lead-free piezoelectric ceramic actuator application.

Keywords

barium compounds; ferroelectric transitions; permittivity; piezoceramics; piezoelectricity; sintering; sodium compounds; strontium compounds; NaNbO₃-BaTiO₃-SrTiO₃; conventional solid state sintering method; dielectric constant; dielectric properties; electromechanical properties; lead-free piezoelectric ceramic actuator; orthorhombic-tetragonal phase transition temperature; piezoelectric ceramics; piezoelectric coefficient; piezoelectric properties; Ceramics; Dielectric constant; Dielectric materials; Dielectric measurements; Environmentally friendly manufacturing techniques; Lead; Niobium compounds; Piezoelectric materials; Powders; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 2007. ISAF 2007. Sixteenth IEEE International Symposium on

Conference_Location

Nara

ISSN

1099-4734

Print_ISBN

978-1-4244-1334-8

Electronic_ISBN

1099-4734

Type

conf

DOI

10.1109/ISAF.2007.4393370

Filename

4393370