Patent ID: 11938730
Assignee: SEIKO EPSON CORPORATION
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B  H | IPC B  H

Claim 13:
14. A piezoelectric element in which a first electrode, a seed layer, a piezoelectric layer, and a second electrode are laminated on a substrate, wherein the seed layer is a composite oxide containing at least Pb, Bi, Fe, and Ti, wherein the composite oxide included in the seed layer is represented by PbxBi(a−x)FeyTi(b−y)Oz, where, a>x and b>y, and
wherein when the piezoelectric layer is analyzed from a lamination direction of the piezoelectric layer by an X-ray diffraction method, a half width of a rocking curve in a (100) plane in the X-ray diffraction method is equal to or less than 3.2°.