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:
Jul. 19, 2005
Filed:
Aug. 17, 2001
Hideomi Koinuma, Tokyo, JP;
Yuji Matsumoto, Kanagawa, JP;
Hideomi Koinuma, Tokyo, JP;
Yuji Matsumoto, Kanagawa, JP;
Japan Science and Technology Corporation, Saitama, JP;
Abstract
A mixture of TiOand Co is placed in a vacuum chamber under selected oxygen pressure and irradiated in the vacuum chamber with a selected laser light to cause TiOand Co to evaporate from the target and a layer of TiO-Co to epitaxially grow on a heated single crystal substrate. The titanium dioxide-cobalt magnetic film for use in a photocatalyst, a semiconductor material having optical, electrical and magnetic functions, and a transparent magnet. The film is expressed by TiCoOwhere 0<x≦0.3, and wherein a Ti atom at its lattice position is replaced with a Co atom. The film has anatase or rutile crystalline structure, has its band gap energy varying in a range between 3.13 eV and 3.33 eV, retains its magnetization even at a temperature higher than a room temperature, and is transparent to visible light.