Semiconductive ceramic composition

Details Semiconductive ceramic composition Semiconductive ceramic composition

1987-08-21

1989-12-26

Hearn, Brian E.

Compositions: ceramic

Ceramic compositions

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

501152, 252520, C04B 3546

Patent

active

048898376

ABSTRACT:
A semiconductive ceramic composition for a boundary insulation type semiconductive ceramic capacitor capable of causing the capacitor to exhibit increased dielectric constant, satisfactory frequency and temperature characteristics, and decreased dielectric loss. The composition includes a SrTiO.sub.3 base component and a minor component consisting of CaTiO.sub.3, Y.sub.2 O.sub.3 and Nb.sub.2 O.sub.5. The composition may further contain MnO and SiO.sub.2, which contribute to an increase in insulation resistance of the capacitor and enlargement of an appropriate range of a (SrO+CaO)/TiO.sub.2, respectively. Also, a composition includes a SrTiO.sub.3 base component and a minor component consisting of CaTiO.sub.3, BaTiO.sub.3, Y.sub.2 O.sub.3 and Nb.sub.2 O.sub.5.

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