Dielectric ceramics

Details Dielectric ceramics Dielectric ceramics

1998-06-01

2000-04-18

Group, Karl

Compositions: ceramic

Ceramic compositions

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

C04B 35495

Patent

active

060515155

ABSTRACT:
In the dielectric ceramic of this invention, a perovskite-type crystal phase is precipitated as a main crystal phase and a complex oxide crystal phase other than the perovskite-type crystal phase is precipitated as a sub-crystal phase, wherein the above perovskite-type crystal phase contains Mg, W, an iron family metal elements and/or Zn and Ba and/or Sr as metal elements, and the complex oxide crystal phase contains W, and Ba and/or Sr as metal elements and the main crystal phase and the sub-crystal phase have a peak intensity ratio by X-ray diffraction of formula (1):

REFERENCES:
patent: 5268341 (1993-12-01), Koyasu et al.
patent: 5432135 (1995-07-01), Hirahara et al.
patent: 5459115 (1995-10-01), Kagata et al.
patent: 5504044 (1996-04-01), Okawa et al.

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