Patent ID: 6087286
Filing Date: 2000-07-11
Classification: C04B,H01P

Abstract:
A dielectric ceramic composition comprising a composite oxide of lead, calcium, tungsten, iron and niobium, whereinsaid composite oxide has a composition represented by(Pb.sub.1-x Ca.sub.x O).sub.y (W.sub.s Fe.sub.t Nb.sub.u)O.sub.zwhere0.3.ltoreq.x.ltoreq.0.9,1.000.ltoreq.y<1.020,1.03.ltoreq.(2s+u)/t.ltoreq.1.40,s+t+u=1,0.05.ltoreq.s.ltoreq.0.200.2.ltoreq.u.ltoreq.0.49, andz=3s+(5/2)u+(3/2)t.