Ceramic composition of high dielectric constant

Details Ceramic composition of high dielectric constant Ceramic composition of high dielectric constant

1983-04-11

1984-07-24

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

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

501152, C04B 3546, C04B 3550

Patent

active

044618441

ABSTRACT:
A ceramic composition of a high dielectric constant is provided, which consists of 100 mol parts of barium metatitanate (BaTiO.sub.3), (2/3)(7.+-.1) mol parts of cerium dioxide, and 7.+-.1 mol parts of titanium dioxide (TiO.sub.2), and to which 0.05 to 0.2 mol part of MnO.sub.2 is added. The ceramic composition has a ceramic microstructure in which a grain size is as small as 2 to 3 .mu.m and a pore size is small to be not more than 3 .mu.m. The ceramic composition has a high dielectric constant of about 10,000, a high breakdown voltage, and little dependency on voltage. The ceramic composition is very suitable as a thin dielectric film for a laminated ceramic chip capacitor.

REFERENCES:
patent: 2469584 (1949-05-01), Wainer et al.
patent: 3268783 (1966-08-01), Saburi
patent: 3764529 (1973-10-01), Matsuo et al.
patent: 4404029 (1983-09-01), Iwaya et al.

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