Patent ID: 9257634
Filing Date: 2016-02-09
CPC Classification: B41J,H01L

Claim Text:
1. A piezoelectric element comprising: a first electrode; a piezoelectric layer which is provided on the first electrode; and a second electrode which is provided on the piezoelectric layer, wherein the piezoelectric layer is made of a piezoelectric material expressed as a mixed crystal including a first component formed of a complex oxide containing Bi and Fe and having a rhombohedral perovskite structure and a complex oxide containing Ba and Ti and having a tetragonal perovskite structure, a second component formed of a complex oxide containing Bi, K, and Ti and having a tetragonal perovskite structure, and a third component formed of a complex oxide containing Bi, Mg, and Ti and having a rhombohedral perovskite structure.