Ceramic capacitor and method for the preparation thereof

Details Ceramic capacitor and method for the preparation thereof Ceramic capacitor and method for the preparation thereof

1992-03-16

1993-07-06

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

29 2542, H01G 410, H01G 700

Patent

active

052259609

ABSTRACT:
Disclosed is a ceramic capacitor of a mono-layer structure or a multi-layer structure, which has characteristic X7R (characteristic B) and which is high in reliability in direct current breakdown voltage at 125.degree. C. and small in size. The ceramic capacitor has a dielectric layer and internal electrodes disposed so as to interpose the dielectric layer. The dielectric layer is composed of a sintered body of ceramic particles whose core sections are made mainly of BaTiO.sub.3 and whose shell sections are made from BaTiO.sub.3 in the form of a solid solution composed of an oxide of one or more than one element selected from Mg, Ca, Sr and Zn and an oxide of one or more than one element selected from Sc, Y, Gd, Dy, Ho, Er, Yb, Tb, Tm and Lu.

REFERENCES:
patent: 4987107 (1991-01-01), Narumi et al.
patent: 5014158 (1991-05-01), Nishimura et al.
patent: 5064596 (1991-11-01), Chida et al.
patent: 5082810 (1992-01-01), Bergna et al.

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