Phase Transition Temperatures and Piezoelectric Properties of (Bi1/2Na1/2)TiO3-(Bi1/2Li1/2)TiO3-(Bi1/2K1/2)TiO3 Ternary Systems

Author

Hiruma, Yuji ; Nagata, Hajime ; Takenaka, Tadashi

Author_Institution

Tokyo Univ. of Sci., Chiba

fYear

2007

fDate

27-31 May 2007

Firstpage

647

Lastpage

648

Abstract

The phase transition temperatures and piezoelectric properties of x(Bi_1/2Na_1/2)TiO₃-y(Bi_1/2Li_1/2)TiO₃-z(Bi_1/2K_1/2)TiO₃ (x+y+z=1) (BNLKT 100y-100z) ceramics were investigated. BNLKT 100y-100z (y=0-0.08) show the morphotropic phase boundaries between rhombohedral and tetragonal around y=0.18-0.20. MPB compositions showed large piezoelectric properties, however, depolarization temperatures, T_d, were low. On the other hand, BNLKT4-28 with tetragonal composition shows comparatively high T_d and d₃₃ of 227degC and 147 pC/N, respectively.

Keywords

bismuth compounds; crystal structure; dielectric depolarisation; ferroelectric transitions; lithium compounds; piezoceramics; potassium compounds; sodium compounds; Bi_0.5Na_0.5TiO₃-Bi_0.5Li_0.5TiO₃-Bi_0.5K_0.5TiO₃; ceramics; depolarization temperatures; morphotropic phase boundaries; phase transition temperatures; piezoelectric properties; Bismuth; Capacitance measurement; Ceramics; Dielectric measurements; Electric variables measurement; Permittivity measurement; Resonance; Shape measurement; Temperature dependence; Temperature measurement;

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.2007.4393357

Filename

4393357