Patent ID: 8646879
Filing Date: 2014-02-11
Classification: B41J,C04B,H01L

Abstract:
1. A piezoelectric element comprising: a piezoelectric layer; and an electrode which is provided with the piezoelectric layer, wherein the piezoelectric layer comprises a complex oxide which has a perovskite structure including: bismuth; iron; a first dopant element which is at least one type selected from a group formed from sodium, potassium, calcium, and strontium; and a second dopant element which is at least one type selected from a group formed from manganese, titanium, vanadium, niobium, and tin, wherein the bismuth and the first dopant element are included in an A site and the iron and the second dopant element are included in a B site, wherein the complex oxide has a deficiency in the A sites of the perovskite structure and has bismuth in the B sites.