Influence of BCZT Dopant on Dielectric Properties of PZT Ceramics

Abstract

(1-x)Pb(Zr_0.52Ti_0.48O₃ [PZT] – x(Ba_0.9Ca_0.1)(Ti_0.85Zr_0.15)O₃ [BCZT] (x = 0, 0.04, 0.08, 0.10, 0.20 and 0.30) were prepared by a two-step mixed-oxide method. XRD patterns of all ceramic samples exhibited a complete perovskite phase without impurity phase and no a second phase. The dielectric studies indicated that the phase transition behavior of the ceramic compositions becomes more diffuse with increasing BCZT contents. Moreover, The maximum dielectric constant and the transition temperature decrease with the increasing BCZT contents. The addition of BCZT contents caused the decrease of the tanδ value for 218% compared to that of pure PZT.

Keywords:

• Phase transition
• dielectric
• PZT
• BCZT

Funding

The authors would like to express sincere gratitude to the Thailand Research Fund (TRF), The Thailand Graduate Institute of Science and Technology (TGIST) under the National Science and Technology Development Agency (NSTDA), the Royal Golden Jubilee Ph.D. Program, the Graduate School and Faculty of Science, Chiang Mai University, Thailand for their financial supports. We wish to thank the National Research University Project under Thailand's Office of the Higher Education Commission for financial support. P. BUTNOI would like to thank the Thailand Graduate Institute of Science and Technology for her scholarship.