Patent ID: 6083415
Filing Date: 2000-07-04
Classification: C04B,H01L

Abstract:
A piezoelectric ceramic composition represented by the formula:(1-n)(K.sub.1-x-y Na.sub.x Li.sub.y).sub.m (Nb.sub.1-z Ta.sub.z)O.sub.3 -nM1M2M3O.sub.3wherein M1 represents a trivalent metal element; M2 represents a monovalent metal element; M3 represents a tetravalent metal element; and x, y, z, m, and n satisfy the following conditions: 0.9.ltoreq.x; y.ltoreq.0.3; x+y.ltoreq.0.75; 0.ltoreq.z.ltoreq.0.3; 0.98.ltoreq.m.ltoreq.1.0; and 0<n<0.1.