Patent ID: 9537083
Date: 2017-01-03
CPC Classifications: C04B,H01L

Claim:
1. A piezoelectric composition containing a major component that is a perovskite-type oxide which is represented by the general formula ABO 3 , which contain no Pb, and which has A-sites containing Bi, Na and K and B-sites containing Ti, wherein the Ti is partially substituted with a transition metal Me that is at least one selected from the group consisting of Mn, Cr and Co and the content of Bi and the transition metal Me in the perovskite-type oxide, which is the major component is more than 20 mole percent to 43 mole percent in terms of Bi u1 MeO 3 , where 0.75≦u1≦1.0, wherein the major component has a perovskite structure and is represented by the following formula: where 0.2<x≦0.43, 0.05≦y<1, x+y<1, 0.75≦s