Semiconductive ceramic composition and semiconductive ceramic de

Details Semiconductive ceramic composition and semiconductive ceramic de Semiconductive ceramic composition and semiconductive ceramic de

1997-02-06

1997-12-30

Green, Anthony

Compositions: ceramic

Ceramic compositions

Yttrium, lanthanide, actinide, or transactinide containing

501132, 252519, C04B 3550

Patent

active

057030006

ABSTRACT:
Provided is a semiconductive ceramic composition comprising a lanthanum cobalt oxide and having a negative resistance-temperature characteristic, which contains, as the side component, a chromium oxide in an amount of from about 0.005 to 30 mol % in terms of chromium, and also a semiconductive ceramic device comprising the composition. The device is usable for rush current inhibition, for motor start-up retardation and for halogen lamp protection, and is also usable in temperature-compensated crystal oscillators.

REFERENCES:
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patent: 4019097 (1977-04-01), Miller et al.
patent: 4229775 (1980-10-01), Miller
patent: 4583146 (1986-04-01), Howell
Japio Patent Abstracts Abstract No. JP407230902A, which is an abstract of Japanese Patent No. 7-230902 (Aug. 1995).
WPIDS Abstract No. 82-14827E, which is an abstract of Japanese Patent No. 57-008439 (Jan. 1982).
WPIDS Abstract No. 93-097016, which is an abstract of Japanese Patent No. 5-039585 (Feb. 1993).
WPIDS Abstract No. 94-352284, which is an abstract of Japanese Patent No. 6-275283 (Sep. 1994).
WPIDS Abstract No. 95-150171, which is an abstract of Japanese Patent No. 7-073886 (Mar. 1995).

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