High permittivity dielectric ceramic composition and...

Details High permittivity dielectric ceramic composition and... High permittivity dielectric ceramic composition and...

2006-03-07

2006-03-07

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

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

C501S139000

Reexamination Certificate

active

07008894

ABSTRACT:
A high permittivity dielectric ceramic composition wherein a main component includes BaTiO3: 74.24 to 79.97 mol %, BaZrO3: 5.69 to 12.04 mol %, CaTiO3: 7.84 to 12.13 mol %, MgTiO3: 3.11 to 4.72 mol % and Bi2TiO5: 0.10 to 0.60 mol %. With respect to 100 wt % of the main component, 0.1 or less (excepting 0) of NiO, 0.1 wt % or less (excepting 0) of CeO2, and 0.2 wt % or less (excepting 0) of MnO are included. In accordance with need, 0.2 wt % or less (excepting 0) of SiO2is further included with respect to 100 wt % of the main component. A high relative permittivity, such as 9000 or more, a high AC breakdown voltage, and a small electrostatic capacity change rage with respect to temperature can be obtained.

REFERENCES:
patent: 5604166 (1997-02-01), Sasaki et al.
patent: A-60-101803 (1985-06-01), None
patent: A-02-123614 (1990-05-01), None
patent: (A) 3-65558 (1991-03-01), None
patent: (A) 7-267732 (1995-10-01), None

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