Abstract
Lead-free piezoceramics based on the (Ba, Ca)(Zr, Ti)O3 (BCZT) system provide outstanding electromechanical characteristics for low-temperature actuation applications, however manufacturing temperatures are a little high. Here, we demonstrate how calcium doping can simultaneously enhance Ba(Zr, Ti, Sn)O3 piezoceramics' electromechanical strain response for the MPB composition(s) with formula (Ba1-xCax)(Ti0.85+xZr0.02Sn0.13-x)O3. The electromechanical, dielectric, and ferroelectric properties of the samples, which were created utilizing solid state synthesis techniques, were all investigated. The sample with the highest d*33 value, 748 pm/V for 0.26 kV/mm and 645 pm/V for 0.62 kV/mm, had 0.070 mol% Ca substituted on the perovskite lattice's A-site, which also demonstrated the best dielectric and piezoelectric performance in the composition range for 0.070 ≤ x ≤ 0.090. The ceramic with electromechanical coefficient (kp) = 44.6 % also displays the greatest values of large electrostrictive coefficients (Q33 ≈ 0.10 m4/C2) that also observed in these Ca, Zr and Sn doped Ba(Zr,Ti, Sn)O3 ceramics.
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