Preparation and Piezoelectric Properties of (h00)-Oriented BaTiO₃ Ceramics by Tape Casting

Abstract

(h00)-oriented BaTiO₃ ceramics were prepared by tape casting using plate-like BaTiO₃ particles as a template. XRD results showed that the degree of orientation of the ceramics is increased from 0.0% to 85.3% by the addition of BaTiO₃ template from 0 wt% to 15 wt%, then decreased to 40.7% with further increasing the template to 30wt%. Their piezoelectric properties were measured using a resonance–antiresonance method and d₃₃ meter. It is showed that the piezoelectric properties of oriented samples were increased with increasing degree of orientation. The mass fraction of the template was optimized to achieve improved piezoelectric properties, which was found to be 85.3% with a piezoelectric constant d₃₃ of 320 pC/N.

Keywords:

• (h00)-oriented BaTiO₃ ceramics
• plate-like BaTiO₃ particles
• Tape casting
• piezoelectric properties

Acknowledgments

The authors would like to acknowledge the support from the National Natural Science Foundation of China under grant No. 50932007, 50972108 and Shanghai Foundation Project under grant 08JC1419100. It was also partially supported by the Research Grants Council of the Hong Kong Special Administrative Region, China (CityU No. 103307).