Preparation and Electrical Properties of (1-x)Ba_0.9Sr_0.1[Ti_0.8(Fe_0.5Nb0.5)_0.2]O₃–xBiZn_0.5Ti_0.5O₃ Ceramics

Abstract

The (1-x)Ba_0.9Sr_0.1[Ti_0.8(Fe_1/3Nb_2/3)_0.2]O₃–xBiZn_1/2Ti_1/2O₃ solid solution ceramics were synthesized via a solid-state reaction method where x = 0.02, 0.04, 0.06, 0.08 and 0.10. The structural and electrical properties of these ceramics system were investigated as a function of the BZT content by X-ray diffraction (XRD) and dielectric measurement techniques. The XRD analysis demonstrated that with increasing BZT content in (1-x)BSTFN–xBZT, the structural change occurred from the rhombohedral to the tetragonal phase at room temperature. Changes in the dielectric behavior were found to depend on the BZT content.

Keywords:

• Lead-free piezoelectric
• phase transiton
• barium strontium titanate
• barium iron niobate
• bismuth zinc titanate

Acknowledgment

This work was supported by The Thailand Research Fund (TRF), the National Research University Project under Thailand's office of the Higher Education Commission, and faculty of Science, Chiang Mai University, Thailand. Finally, the authors would like to express their thanks to Scientific and Technological Instrument Center, Mae Fah Luang University for providing important facilities using in this project.