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:
Jan. 14, 1997
Filed:
Jun. 30, 1995
Kazuhiko Hayashi, Tokyo, JP;
Hidefumi Yamamoto, Tokyo, JP;
Junichi Fujikata, Tokyo, JP;
Kunihiko Ishihara, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
The invention relates to a magnetoresistance material, i.e. a conductive material that exhibits magnetoresistance, which is an inhomogeneous system consisting of a nonmagnetic matrix and ultrafine particles of a ferromagnetic material such as Co or Ni--Fe--Co dispersed in the nonmagnetic matrix. With the aim of reducing deterioration of the magnetoresistance effect, an alloy or mixture of at least two metal elements selected from Cu, Ag, Au and Pt is used as the material of the nonmagnetic matrix. Optionally, the nonmagnetic matrix may contain a limited quantity of a supplementary element selected from Al, Cr, In, Mn, Mo, Nb, Pd, Ta, Ti, W, V, Zr and Ir. A film of the magnetoresistance material can be formed on a substrate, and it is optional to interpose a buffer layer between the film and the substrate and/or cover the film with a protective layer.