Patent ID: 9159904
Filing Date: 2015-10-13
Classification: C04B,H01L,Y10T

Abstract:
1. A piezoelectric ceramic composition according to the composition formula {Li x (K 1-y Na y ) 1-x }(Nb 1-z Sb z )O 3 including additives as the metallic elements Bi and Fe within the range of the following relational expressions: 0.03≦x≦0.045; 0.5≦y≦0.58; 0.03≦z≦0.045; and 0.006≦v<w≦0.010 whereof v is the additive amount of Bi (molar ratio), and w is the additive amount of Fe (molar ratio), and having a piezoelectric constant d 33 is 250 pC/N or more.