Dielectric ceramic composition, dielectric ceramic material and

Details Dielectric ceramic composition, dielectric ceramic material and Dielectric ceramic composition, dielectric ceramic material and

1997-12-16

2000-07-11

Group, Karl

Compositions: ceramic

Ceramic compositions

Titanate, zirconate, stannate, niobate, or tantalate or...

428469, 428471, C64B 35497

Patent

active

060872861

ABSTRACT:
A dielectric material and a dielectric device is obtained using a dielectric ceramic composition which can be sintered at a temperature of up to 950.degree. C. and having as a main phase a composite oxide of Pb, Ca, W, Fe and Nb, said composite oxide having 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.z where x, y, s, t, u, and z are 0.3.ltoreq..times..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.0.20, 0.2.ltoreq.u.ltoreq.0.49 and z=3s+5/2u+3/2t. The composition can be co-sintered with silver, has low loss and a high dielectric constant, and makes it possible to prevent the entrance of a plating bath into a device.

REFERENCES:
patent: 5565391 (1996-10-01), Nakano et al.

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