Patent ID: 6280650
Filing Date: 2001-08-28
Classification: C04B,H01L

Abstract:
A piezoelectric ceramic composition comprising a lead zirconate titanate (PZT) represented by the composition formulaPb.sub.A [(Ti.sub.x Zr.sub.1-x).sub.a (Sn.sub.y Cr.sub.1-y).sub.b Sb.sub.c ]O.sub.3in which 0.94.ltoreq.A.ltoreq.1.02, 0.46.ltoreq.x.ltoreq.0.51, 0.01.ltoreq.y.ltoreq.0.5, 0.01.ltoreq.b.ltoreq.0.03, 0.01.ltoreq.c.ltoreq.0.04, a+b+c=1, wherein about 0.2 to 2 mol % of the Pb atoms have been displaced by La.