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Refined XRD patterns of ceramics near the tetragonal strongest peak (110) and orthorhombic strongest peak (121) (a), and related interplanar distance (b).
Temperature and composition dependence of dielectric constant for the ceramics. (a) vs temperature for the sample at different frequency, (b) the peak value and width at half-maximum (WHM) vs Ca fraction , and (c) vs Ca fraction at room temperature.
Polarization vs electric field for various Ca fraction samples at room temperature.
Field-induced displacement for various Ca fraction samples with , driving field at room temperature (sample thickness is ).
Composition dependence of strain and piezoelectric coefficient in a driving field.
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