In a piezoelectric element, a cubic or tetragonal orientation control
layer (15) is provided on a first electrode layer (14), and formed on the
orientation control layer (15) is a piezoelectric layer (16) having a
rhombohedral or tetragonal crystalline structure and made of lead
zirconate titanate to which a Pb-containing complex perovskite compound
expressed by the chemical formula Pb(A.sub.aB.sub.b)O.sub.3 has been
added in an amount that is from 1 mol % to 50 mol %. The piezoelectric
layer (16) is formed so that the crystal grains thereof become columnar
grains which extend in the thickness direction of the piezoelectric layer
(16) and in which the ratio of the average cross-sectional diameter to
the length is from 1/50 to 1/14.