PIEZOELECTRIC CERAMIC COMPOSITION

摘要

Disclosed is a piezoelectric ceramic composition which is produced by adding two or more metal elements and has excellent piezoelectric properties. The piezoelectric composition comprises the main ingredient represented by the general formula: [Li x (K 1-y Na y ) 1-x ] (Nb 1-z-w Ta z Sb w )O 3 (0 ‰ x ‰ 0. 2, 0 ‰ y ‰ 1, 0 < z ‰ 0.4, 0 < w ‰ 0.2) and the auxiliary ingredient represented by the general formula: ABO 3 (wherein A and B independently represent a metal element having a valence of +3 or together represent a combination of at least two metal elements each having a valence of +3 in average; and ABO 3 represents a compound having a perovskite structure).