Dielectric ceramic composition and multilayer mircowave device e

Details Dielectric ceramic composition and multilayer mircowave device e Dielectric ceramic composition and multilayer mircowave device e

1993-02-08

1993-12-28

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

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

501134, 428471, C04B 3500

Patent

active

052739449

ABSTRACT:
A dielectric ceramic composition which consists essentially of bismuth oxide, calcium oxide and niobium oxide, wherein when the dielectric ceramic composition is expressed by a formula xBiO.sub.3/2 -yCaO-zNbO.sub.5/2 and the x, y and z are plotted in a ternary system diagram so as to total 1.0, the x, y and z fall in a region enclosed by a pentagon having the following vertexes A, B, C, D and E,

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patent: 4330631 (1982-05-01), Kawashima et al.
patent: 4638401 (1987-01-01), Ling et al.
patent: 4978646 (1990-12-01), Bardhan et al.
patent: 5004713 (1991-04-01), Bardhan et al.
Japanese Journal of Applied Physics, Part 1, vol. 31, No. 9B, Sep. 1992, Kagata et al. "Low-Fire Bismuth-Based Dielectric Ceramics for Microwave Use", pp. 3152-3155.
Comptes Rendus des Seances de l'Academie des Sciences, vol. 271C, No. 14, Oct. 5, 1970, Paris, Brusset et al. "Synthese d'oxydes ternaires CaB.sup.v.sub.0,5 B.sup.III.sub.0,5 O.sub.3 ", pp. 310-813.
Wakino et al., Journal of the American Ceramic Society, 67(4) 278-281 (1984).

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