Compositions: ceramic – Ceramic compositions – Yttrium – lanthanide – actinide – or transactinide containing
Patent
1998-10-07
2000-07-18
Koslow, C. Melissa
Compositions: ceramic
Ceramic compositions
Yttrium, lanthanide, actinide, or transactinide containing
501126, 501127, 501128, 501153, 501154, 501103, 501105, 252 623T, 361115, 361 27, 361106, C04B 3550, H01C 704
Patent
active
060907355
ABSTRACT:
A semiconductive ceramic composition having negative resistance-temperature characteristics, wherein the composition comprises lanthanum cobalt oxide as the primary component, and, as secondary components, at least one oxide of an element selected from B, Fe and Al and at least one oxide of an element selected from Si, Zr, Hf, Ta, Sn, Sb, W, Mo, Te, Ce, Nb, Mn, Th and P. A semiconductive ceramic composition having a resistivity of approximately 10 .OMEGA..multidot.cm to 100 .OMEGA..multidot.cm at room temperature is obtained by controlling the amount of additives. Since the resistivity at room temperature can be enhanced to several times or more that of the conventional compositions while characteristics of the conventional compositions are maintained, the composition may be widely applied to control heavy current.
REFERENCES:
patent: 5703000 (1997-12-01), Nakayama et al.
V.G. Bhide and D.S. Rajoria, "Mossbauer Studies of the High-Spin-Low-Spin Equilibria and the Localized-Collective Electron Transition in LaCoO.sub.3, " Physical Review B, vol. 6, No. 3, pp. 1021-1032 (Aug. 1, 1972).
Ishikawa Terunobu
Nakayama Akinori
Nimi Hideaki
Sakabe Yukio
Urahara Ryouichi
Koslow C. Melissa
Murata Manufacturing Co. Ltd.
LandOfFree
Semiconductive ceramic composition and semiconductive ceramic el does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Semiconductive ceramic composition and semiconductive ceramic el, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductive ceramic composition and semiconductive ceramic el will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2036688