High voltage dielectric (SRT I03)

Details High voltage dielectric (SRT I03) High voltage dielectric (SRT I03)

1981-09-30

1983-06-14

Poer, James

Compositions: ceramic

Ceramic compositions

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

C04B 3500

Patent

active

043884156

ABSTRACT:
A ceramic dielectric composition is provided including 63.96 to 73.72 mole % SrTiO.sub.3, 17.90 to 24.04 mole % TiO.sub.2, and 8.11 to 12.00 mole % Bi.sub.2 O.sub.3 and further including 0 to 8 weight % NiO, 0 to 1.11 weight % La.sub.2 O.sub.3, 0 to 2.94 weight % SiO.sub.2 and 0 to 0.32 weight % MnO. The said weight %, where mentioned, is with respect to the total weight of the above mentioned three compounds, SrTiO.sub.3, TiO.sub.2 and Bi.sub.2 O.sub.3.
These ceramic dielectric compositions have high dielectric constants and low dielectric losses (dissipation factors). Also, the variation of dielectric constant and dissipation factor with respect to temperature, applied AC voltage, and applied DC voltage are very small.

REFERENCES:
patent: 4119554 (1978-10-01), Fujiwara

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