PIEZOELECTRIC ELEMENT AND LIQUID DISCHARGE HEAD

摘要

PROBLEM TO BE SOLVED: To provide a piezoelectric element using a non-lead piezoelectric body excellent in piezoelectric characteristics, and to provide a liquid discharge head having the piezoelectric element.SOLUTION: A piezoelectric element is provided on a substrate and has a piezoelectric body and a pair of electrodes in contact with the piezoelectric body. The piezoelectric body is composed of an ABOtype perovskite oxide in which an A site atom is composed of Bi and a B site atom is composed of Co and Fe, and the atomic number ratio Co/Fe of the B site atom is from 15/85 to 35/65.