PIEZOELECTRIC CERAMIC, METHOD FOR MANUFACTURING THE SAME, AND PIEZOELECTRIC MATERIAL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a piezoelectric ceramic including A1B1Obased material and BaMOadded thereto, by which a high piezoelectric constant d33 can be ensured even with a simple step.SOLUTION: A method for manufacturing a piezoelectric ceramic having a composition expressed by the general formula: (1-s)A1B1O-sBaMO. The method comprises the steps of: preparing a ceramic raw material powder having an average particle size of 0.05-0.3 μm; molding the ceramic raw material powder into a compact; and reducing and firing the compact at a temperature of 900-1300°C under an atmosphere of which the oxygen partial pressure is 1×10to 1×10kPa.