Effect of MnCO₃ Doping on Microstructure and Electrical Properties of PSZT Ceramics

Abstract:

The effect of manganese doping on microstructure, piezoelectric and electromechanical properties of Pb_0.94Sr_0.06(Zr_0.52Ti_0.48)O₃ (PSZT) ceramics has studied. The PSZT ceramics doped MnCO₃ concentration in the region of 0-1.0 mol% were prepared by a solid-state reaction and conventional sintering process. Phase identification showed the formation of single phase perovskite structure in all compositions. Microstructure and fracture behavior were observed by scanning electron microscopy (SEM). The fracture behavior demonstrated the change of fracture type from trangranular to mix of trans-and inter-granular type with increasing the amount of MnCO₃. Dielectric constant (K), d₃₃ and k_p were increased when higher amount of MnCO₃ was doped. In addition, the mechanical quality factor (Q_m) was highest at 0.1 mol% MnCO₃ doping in PSZT ceramics.

• Periodical: Key Engineering Materials (Volume 608)
• Pages: 187-192
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.608.187
• Online since: April 2014
• Authors: Arjin Boonruang*, Piyalak Ngernchuklin, Saengdoen Daungdaw, Nestchanok Yongpraderm, Chutima Eamchotchawalit
• Keywords: Fracture Behavior, Mechanical Quality Factor, PSZT Ceramics, Solid-State Reaction

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