Method for preparing rare earth or yttrium, transition metal oxi

Details Method for preparing rare earth or yttrium, transition metal oxi Method for preparing rare earth or yttrium, transition metal oxi

1978-06-29

1980-11-11

Husar, Francis S.

Metal working

Method of mechanical manufacture

Electrical device making

29621, H01C 700

Patent

active

042324416

ABSTRACT:
Thermistors comprising transition metal such as iron, rare earth of the lanthanide series or yttrium, and oxygen exhibit sufficient independence to variation in oxygen partial pressure over a range of exhaust gas conditions of internal combustion engines as to make them particularly suitable for temperature compensation of oxygen sensors such as those derived from titania as well as temperature sensing in other oxygen varying environments.

REFERENCES:
patent: 3681734 (1972-08-01), Brown
patent: 3703478 (1972-11-01), DeVries
patent: 3815074 (1974-06-01), Nagata
patent: 3886785 (1975-06-01), Stadler
patent: 3950273 (1976-04-01), Jones
patent: 4010118 (1977-03-01), Walch
patent: 4010119 (1977-03-01), Walch
patent: 4010120 (1977-03-01), Walch
patent: 4010121 (1977-03-01), Walch
patent: 4013592 (1977-03-01), Matsuoka
patent: 4014822 (1977-03-01), Fujikawa
Rao et al., "Electrical Transport in Rare Earth Ortho-Chromites-Manganites and-Ferrites", Phys. Chem. Solids, vol. 32, pp. 345-358, 1971.

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