The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 24, 2009
Filed:
Feb. 12, 2004
Hideo Hosono, Yamato, JP;
Masahiro Hirano, Tokyo, JP;
Katsuro Hayashi, Kawasaki, JP;
Masashi Miyakawa, Yokohama, JP;
Isao Tanaka, Kofu, JP;
Hideo Hosono, Yamato, JP;
Masahiro Hirano, Tokyo, JP;
Katsuro Hayashi, Kawasaki, JP;
Masashi Miyakawa, Yokohama, JP;
Isao Tanaka, Kofu, JP;
Japan Science and Technology Agency, Kawaguchi-shi, JP;
Abstract
In a solid solution system of AlOand CAO or SrO, it has been difficult to obtain a material having a high electrical conductivity (>10S·cm) at room temperature. A compound is provided in which electrons at a high concentration are introduced into a 12CaO.7AlOcompound, a 12SrO.7AlOcompound, or a mixed crystal compound containing 12CaO.7AlOand 12SrO.7AlO. The compound formed by substituting all the free oxygen ions with electrons is regarded as an electride compound in which [CaAlO](4e) or [SrAlO](4e) serves as a cation and electrons serve as anions. When a single crystal or a hydrostatic pressure press molded material of a fine powder thereof is held at approximately 700° C. in an alkaline metal vapor or an alkaline earth metal vapor, melt of a hydrostatic pressure press molded material of a powder is held at approximately 1,600° C. in a carbon crucible, followed by slow cooling for solidification, or a thin film of the compound held at approximately 600° C. is implanted with rare gas ions, a great number of the free oxygen ions can be substituted with electrons.