Piezoelectric composite material

摘要

A piezoelectric composite material having excellent piezoelectric property and workability, which is prepared by compounding in a specific mixing ratio a ferroelectric ceramic powder comprising microcrystals having uniform size and virtually a single domain and a polymer. The ceramic powder is obtained by preparing a ceramic having a desired composition by causing the appropriate mixture of starting powders to undergo a solid phase reaction, grinding the reaction product, annealing the resulting powder under heat and optionally chemically etching it.