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Large Piezoelectric Coefficient in (Ba1−xCax)(Ti0.96Sn0.04)O3 Lead‐Free Ceramics

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Lead‐free (Ba1−x Ca x )(Ti0.96Sn0.04)O3 (BCST) (= 0–0.04) ceramics were prepared using solid‐state reaction technique. At room temperature, a polymorphic phase transition from orthorhombic phase to tetragonal phase was identified in the composition range of 0.01 ≤  0.03. Extremely high piezoelectric coefficient of d 33 = 510 pC/N and high planar electromechanical coupling factor of k p = 48% were obtained for the BCST ceramics at = 0.02. These results indicate that the BCSTs are promising candidates for the widely used lead‐based piezoelectric materials.
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Document Type: Research Article

Publication date: 2011-12-01

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