METHOD FOR MANUFACTURING PIEZOELECTRIC ELEMENT

摘要

PROBLEM TO BE SOLVED: To ensure the content of lead in a piezoelectric element and to prevent the lowering of piezoelectric characteristics in a method for manufacturing the piezoelectric element by a hydrothermal method. SOLUTION: A method for manufacturing a piezoelectric element having a perovskite crystal structure represented by formula ABO3 and containing an element (a) as an element A includes a first step for forming oxide containing an element a' and a second step for applying hydrothermal treatment to oxide formed by the first step by using an aqueous solution containing the element (a) to form a piezoelectric element. The amount of the element (a) contained in the piezoelectric element formed by the second step is increased as compared with that contained in oxide formed by the first step.