Effect of Antimony Content on Transition Behavior and Electric Properties of (K0.44Na0.52Li0.04)(Nb0.9−xTa0.10Sbx)O3 Ceramics

Here, (K0.44Na0.52Li0.04)(Nb0.9−xTa0.1Sbx)O3 [KNL−(N0.9−xTSx)] lead-free ceramics with potential technological applications are made through B-position substitution on the perovskite structure by Sb ions. This strategy generates crystal changes and stabilizes a tetragonal symmetry, T, giving place to an orthorhombic (O–T) phase boundary close room temperature. Specifically, our results establish that increase in relative volume fractions of T O–T produces functional properties. More relevantly, this improvement properties is accompanied controlling grain size. Therefore, size promotes increased domain size, favoring more wall motion switching. Both effects result d33 coefficient. Finally, we believe work helps understand factors determine KNN–based piezoelectric ceramics.