Figure 2.
(a) Temperature dependence of the dielectric permittivity for representative LxKNNSy-5BZ-2BNZ-1Mn samples. (b) The compositional dependence of the PPT point for LxKNNSy-5BZ-2BNH-1Mn samples. (c) Room-temperature P–E loops of the representative LxKNNSy-5BZ-2BNZ-1Mn samples. (d) Pr extracted from the room-temperature P–E loops of the LxKNNSy-5BZ-2BNZ-1Mn samples. (e) The room-temperature piezoelectric coefficient d33 of the LxKNNSy-BZ-BNH-1Mn samples. (f) ϵr·Pr of the LxKNNSy-5BZ-2BNZ-1Mn samples.