Morphotropic Phase Boundary Study of the BNT-BKT Lead-Free Piezoelectric Ceramics

Abstract:

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A lead-free piezoelectric ceramic binary system based on bismuth sodium titanate (Bi0.5Na0.5)TiO3 (BNT)-bismuth potassium titanate (Bi0.5K0.5)TiO3 (BKT) was synthesized by conventional mixed-oxide technique. The XRD analysis showed that the rhombohedral-tetragonal morphotropic phase boundary (MPB) of the Bi0.5 (Na1-xKx)0.5 TiO3 system was in the composition range of x = 0.16 ~ 0.20. In addition, the piezoelectric properties of this system were also investigated. It was indicated that the piezoelectric properties are better with the compositions near the rhombohedral phase within the MPB than the compositions near the tetragonal phase.

Info:

Periodical:

Key Engineering Materials (Volumes 368-372)

Edited by:

Wei Pan and Jianghong Gong

Pages:

1908-1910

DOI:

10.4028/www.scientific.net/KEM.368-372.1908

Citation:

W. Zhao et al., "Morphotropic Phase Boundary Study of the BNT-BKT Lead-Free Piezoelectric Ceramics", Key Engineering Materials, Vols. 368-372, pp. 1908-1910, 2008

Online since:

February 2008

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Price:

$35.00

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