Patent ID: 7525239

Claim:
A piezoelectric element having, a piezoelectric body and a pair of electrodes which are in contact with the piezoelectric body, wherein the piezoelectric body consists of a perovskite type oxide represented by the following formula (1): (Bi,Ba)(M,Ti)O 3 (1) in which M is an atom of one element selected from the group consisting of Mn, Cr, Cu, Sc, In, Ga, Yb, Al, Mg, Zn, Co, Zr, Sn, Nb, Ta and W, or a combination of the atoms of the plurality of elements, and wherein the piezoelectric body is a piezoelectric body in which crystal phases of at least two of tetragonal structure, rhombohedral structure, pseudo-cubic structure, rhombic system and monoclinic structure are mixedly present.