Patent ID: 9425380
Filing Date: 2016-08-23
CPC Classification: B41J,C04B,H01L,H02N

Claim Text:
1. A piezoelectric element comprising: a first electrode; a second electrode; and a piezoelectric material including: wherein a manganese content relative to 100 parts by weight of the perovskite-type metal oxide is 0.02 parts by weight or more and 0.40 parts by weight or less on a metal basis, wherein an auxiliary component content other than the content of the manganese component relative to 100 parts by weight of the perovskite-type metal oxide is less than 2.1 parts by weight on an oxide basis, wherein the crystal grains have an average circular equivalent diameter of more than 0.8 μm and less than 182.0 μm, and wherein the piezoelectric material has a relative density of more than 89.0% and 100% or less.