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Figure 10. Strategy schematic for synergistically enhancing d33 and temperature stability. (A) Reduced LFD in the matrix to promote polarization rotation. (B) Construction of a diffused PPT phase boundary by elevating the O-T transition temperature. (C) Temperature dependence of d33 for different KNN ceramic compositions. (D) Dielectric-temperature curves for different KNN ceramic compositions. (E) Schematic diagrams of the PEC at room temperature, the O-T transition, and above the O-T transition. This figure quoted with permission[40]. Copyright 2024, Springer Nature.
