Microstructural design of textured KSr 2 Nb 5 O 15 ceramics by a phase‐field simulation and lamination technique

The densification of textured ceramics requires a small template size. However, it is challenging to complete the directional arrangement into the matrix by small templates during the templated grain growth. We propose a strategy to increase the density and texture degree of KSr 2 Nb 5 O 15 ceramics. The microstructures can be designed by a phase‐field simulation and lamination technique. For the textured KSr 2 Nb 5 O 15 ceramics, a high piezoelectricity of d 33 = 98 pC/N (the highest reported d 33 is 65 pC/N) is achieved by the microstructural control. This study provides a novel technique for preparation of textured piezoelectric ceramics with high performances.