Fig. 1. Linear shrinkage with calcination temperature.
Fig. 2. Density with calcination temperature.
Fig. 3. X-ray diffraction patterns with calcination temperature.
Fig. 4. Dielectric constant and tanδ with calcination temperature.
Fig. 5. The bipolar S-E loops with calcination temperature.
Fig. 6. Smax/Emax in the bipolar with calcination temperature.
Fig. 7. The unipolar S-E loops with calcination temperature.
Fig. 8. Smax/Emax in the unipolar with calcination temperature.
Table 1. Characteristics of specimens.
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