Ferroelectric ceramics with formula

Ferroelectric ceramics with formula Pb(Zr0.52Ti0.48)O3/x(Bi0.5Na0.5)TiO3 (when x ¼ 0, 0.1, 0.5, 1.0 and
3.0 wt%) were prepared by a solid-state mixed-oxide method and sintered at the temperature between
1050 and 1200 C for 2 h to obtain dense ceramics. It was found that the optimum sintering temperature
was 1200 C at which all the samples had relative density at least 96% of their theoretical values. Phase
analysis using X-ray diffraction showed tetragonal and rhombohedral perovskite structure of PZT with no
BNT peak detected, indicating that completed solid solutions occurred for all compositions. Scanning
electron micrographs of fractured PZT/BNT ceramics showed equiaxed grain shape with mixed-mode of
transgranular and intergranular fractures. Addition of BNT significantly decreased grain size of the PZT
ceramic. Measurement of room temperature dielectric constant indicated a gradual increase with
increasing BNT content. Results of ferroelectric characterization showed a slight decrease of remanent
polarization and coercive field for BNT-added samples, suggesting ceramics which could be easily poled.
Good piezoelectric coefficient (d33) could be maintained and comparable to that of pure PZT ceramic for
the sample with 1.0 wt% BNT addition.

ผลลัพธ์ (อังกฤษ) 2:

Ceramics with Formula ferroelectric Pb (Zr0.52Ti0.48) O3 / x (Bi0.5Na0.5) TiO3 (when x ¼ 0, 0.1, 0.5, 1.0 and
3.0 WT%) were prepared by a solid-State Mixed-oxide method. and sintered at the Temperature between
C for 2 H in 1050 and 1.2 thousand to Obtain dense Ceramics. It was Found that the Optimum Temperature sintering
was at 1200 C Relative density which all the samples had at least 96% of their theoretical values. Phase
using X-ray diffraction Analysis Showed tetragonal and rhombohedral perovskite structure of PZT with no
BNT Peak detected, Indicating that occurred Solutions for all completed solid compositions. Scanning
Electron micrographs of fractured PZT / BNT Ceramics Showed Mixed-mode with equiaxed Grain shape of
Transgranular and intergranular fractures. Addition of BNT Decreased significantly Grain Size of the PZT
ceramic. Room Temperature measurement of dielectric Constant Indicated a gradual increase with
increasing BNT content. Results of ferroelectric characterization Showed a slight Decrease of remanent
polarization and coercive field for BNT-added samples, suggesting Ceramics which could be easily poled.
Good piezoelectric coefficient (d33) could be maintained and comparable to that of Pure PZT ceramic for
the sample with 1.0. wt% BNT addition.