Structure and ferroelectric properties of Bi(Zn(1/2)Ti(1/2))O3-(Bi(1/2)K(1/2))TiO3 perovskite solid solutions

Chien-Chih Huang; Naratip Vittayakorn; David P Cann

doi:10.1109/TUFFC.2009.1186

Structure and ferroelectric properties of Bi(Zn(1/2)Ti(1/2))O3-(Bi(1/2)K(1/2))TiO3 perovskite solid solutions

IEEE Trans Ultrason Ferroelectr Freq Control. 2009 Jul;56(7):1304-8. doi: 10.1109/TUFFC.2009.1186.

Authors

Chien-Chih Huang¹, Naratip Vittayakorn, David P Cann

Affiliation

¹ Department of Materials Science, School of Mechanical, Industrial, and Manufacturing Engineering, Oregon State University, Corvallis, OR 97331, USA. huangch@onid.orst.edu

PMID: 19574141
DOI: 10.1109/TUFFC.2009.1186

Abstract

Lead-free piezoelectric ceramics based on chiBi(Zn(1/2)Ti(1/2))O3-(1-chi)(Bi(1/2)K(1/2))TiO3 were obtained via solid state processing techniques. A single perovskite phase with tetragonal symmetry was obtained for Bi(Zn(1/2)Ti(1/2))O3 (BZT) substitutions up to 20 mol%. The maximum density was 97.1% at the composition of chi = 0.1. The dielectric measurement indicated that the transition temperature decreased linearly with increasing BZT content. The P-E loops revealed an increase in remanent polarization (P(r)) with the addition of BZT. The maximum planar coupling coefficient, kappa(p), for the chi = 0.1 composition was 21.6 and the piezoelectric coefficient, d33, for chi = 0, chi = 0.05, and chi = 0.1 was 108, 185, and 235 pm/V, respectively. Overall, the dielectric and piezoelectric properties showed significant improvement when BZT was added.