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:
Sep. 07, 1993
Filed:
Jan. 22, 1992
Hiroshi Sakakima, Tsuzuki, JP;
Mitsuo Satomi, Katano, JP;
Toshio Takada, Kyoto, JP;
Teruya Shinjo, Uji, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Seisan Kaihatsu Kagaku Kenkyusho, Kyoto, JP;
TDK Corporation, Tokyo, JP;
Nippon Mining Co., Ltd., Tokyo, JP;
NEC Corporation, Tokyo, JP;
Ube Industries, Ltd., Ube, JP;
Kangafuchi Chemical Industry Co., Ltd., Osaka, JP;
Nippon Steel Corporation, Tokyo, JP;
Tosoh Corporation, Yamaguchi, JP;
Toyo Boseki Kabushiki Kaisha, Osaka, JP;
Abstract
There is provided a magnetoresistance effect element which is a multilayer structure body wherein a first magnetic film layer made of Ni-rich Ni-Co-Fe having a thickness of 10 to 100 .ANG. and a second magnetic film layer made of Co-rich Co-Ni-Fe having a thickness of 10 to 100 .ANG., which are different from each other in coercive force, are integrally laminated with a non-magnetic metal film layer having a thickness of 10 to 100 .ANG. interposed therebetween. The non-magnetic metal film layer is of a metal, for example, Cu, Ag, Au, Pt, Ru or Re. (Ni.sub.A Co.sub.1-A).sub.B Fe.sub.1-B, Ni.sub.A Fe.sub.1-A or Ni.sub.A Co.sub.1-A is used as a material of the first magnetic film, and (Co.sub.C Ni.sub.1-C).sub.D Fe.sub.1-D is used as a material of the second magnetic film.