Piezoelectric element containing perovskite type oxide, and liquid jet head and ultrasonic motor using the piezoelectric element

摘要

There is disclosed a piezoelectric element having, on a substrate, a piezoelectric body and a pair of electrodes which come 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)O₃  (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.