Patent ID: 6123867
Filing Date: 2000-09-26
Classification: C04B,H01L

Abstract:
A piezoelectric ceramic composition comprising a composite oxide represented by Formula (I) as a main component:(1-x)Pb(M.sub.1/3 Nb.sub.2/3).sub.a Zr.sub.b Ti.sub.c O.sub.3 --xRMn.sub.d O.sub.1+2d (I)where 0<x.ltoreq.0.1, 0.ltoreq.a.ltoreq.0.1, 0.ltoreq.b.ltoreq.0.7, 0.3.ltoreq.c.ltoreq.1.0, a+b+c=1, 0.5.ltoreq.d.ltoreq.3, M is at least one metal element selected from the group consisting of Zn, Ni and Mg, and R is at least one metal element selected from the group consisting of Y, Dy, Er, Ho, Tm, Lu and Yb.