Abstract
(Ba1-xCax)(Ti0.90Sn0.10)O3-0.08Dy2O3 ceramics (BCTSD-x, x = 0.02–0.10) were fabricated by conventional solid state sintering method. The effect of Ca2+ ions addition on the phase structure, microstructure, and electric properties of ceramics were studied. X-ray diffraction analysis reveals the replacement of Ba2+ ions in the perovskite structure by Ca2+ ions. Rhombohedral phase and tetragonal phase coexist in the composition with x = 0.06–0.10. Both d33 and Kp of the ceramics increase with increasing Ca concentration, and attain maximum values of 675 pC/N and 55.0%, respectively, for x = 0.06. All the ceramics present typical diffuse phase transition behavior, and the feature is not sensitive to the amount of Ca2+ ions.
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