Dielectric ceramic composition

Details Dielectric ceramic composition Dielectric ceramic composition

1992-07-15

1993-06-15

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

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

501126, C04B 3500

Patent

active

052198081

ABSTRACT:
The present invention provides a composition of dielectric ceramic composition to be used in the frequency region of microwaves.
The composition contains lead oxide, calcium oxide, iron, oxide, tantalum oxide and niobium oxide, and is represented by (Pb.sub.1-x Ca.sub.x).sub.1+a {Fe.sub.178 (Ta.sub.1-y Nb.sub.y).sub.178 }O.sub.3+a wherein x, y and a satisfy, respectively, 0.44.ltoreq.x.ltoreq.0.63, 0.0.ltoreq.y.ltoreq.1.0 and 0.0.ltoreq.a.ltoreq.0.08.

REFERENCES:
patent: 4216102 (1980-08-01), Furukawa et al.
patent: 4216103 (1980-08-01), Fujiwara et al.
patent: 4330631 (1982-05-01), Kawashima et al.
Wakino et al., Microwave Characteristics of (Zr, Sn)TiO.sub.4 and BaO-PbO-Nd.sub.2 O.sub.3 -TiO.sub.2 Dielectric Resonators, Journal of the American Ceramic Society, JACTAW, vol. 67, No. 4, pp. 278-281 (Apr. 1984).

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