Barium titanate semiconductor ceramic compositions

Details Barium titanate semiconductor ceramic compositions Barium titanate semiconductor ceramic compositions

1978-09-13

1980-03-04

Cooper, Jack

Compositions

Electrically conductive or emissive compositions

Metal compound containing

252 623BT, 252521, H01B 108, C04B 3546

Patent

active

041916654

ABSTRACT:
A barium titanate semiconductor ceramic composition which consists essentially of a basic component of barium titanate wherein 5 to 20 mol% of Ba is replaced with Ca, and contains 0.30 to 0.90 mol% of Ho and 0.10 to 0.18 mol% of Mn. The composition enables to produce semiconductor devices with a positive temperature characteristic and a high breakdown voltage, such as PTC thermistors.

REFERENCES:
patent: 2985700 (1961-05-01), Johnston
patent: 4101454 (1978-07-01), Kulwicki et al.

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