Raman and dielectric studies of 0.95Na_0.5Bi_0.5TiO₃-0.05PbTiO₃ ceramic

ABSTRACT

0.95Na_0.5Bi_0.5TiO₃-0.05PbTiO₃ ceramic was prepared by a conventional solid phase sintering process. X-ray diffraction analysis shows that the obtained specimens possess perovskite structure with rhombohedral symmetry. The microstructure study showed a dense structure, in good agreement with the relative density of above 95% as determined by the Archimedes method. The crystal structure, phase transitions behavior and dielectric properties of these ceramics were investigated. Relaxor-like behavior was revealed.

Keywords:

• Na_0.5Bi_0.5TiO₃; 0.95Na_0.5Bi_0.5TiO₃-0.05PbTiO₃; Raman study; dielectric properties

Acknowledgments

The present work was supported by NCN project (No. 2012/05/B/ST5/00371).