Dielectric ceramic composition and dielectric resonator

Details Dielectric ceramic composition and dielectric resonator Dielectric ceramic composition and dielectric resonator

1991-07-02

1993-06-15

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

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

501134, 501104, C04B 3548

Patent

active

052198090

ABSTRACT:
A dielectric ceramic composition possessing a high relative dielectric constant, a high unloaded Q, and an excellent temperature characteristic is expressed as xPbO-yZrO.sub.2 -zCaO, in the relation of x+y+z=1, wherein x, y, z are in mol percentage ranges of 0.125.ltoreq.x.ltoreq.0.49, 0.4.ltoreq.y.ltoreq.0.6, 0.11 .ltoreq.z.ltoreq.0.275. A part of ZrO.sub.2 of the composition formula may be replaced by (B1B2)0.sub.2 (where B1 is Mg, Ca, Zn, Co, Ni, Mn, Cu, Al, Ga, or Y, and B2 is Nb, Ta, or W), or Sn.

REFERENCES:
patent: 4330631 (1982-05-01), Kawashima et al.
patent: 4636378 (1987-01-01), Pastor et al.
patent: 4716134 (1987-12-01), Yamaguchi et al.
patent: 4755493 (1988-07-01), Takeuchi et al.
patent: 4830996 (1989-05-01), Hirai et al.
patent: 4849384 (1989-07-01), Tatsuki et al.
patent: 4874598 (1989-10-01), Oda et al.
Tatsuki et al., "Japanese Journal of Applied Physics", vol. 26, Supplement 26-2, pp. 80-82 (1987).

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