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. 01, 2005
Filed:
Dec. 10, 2003
Nozomu Matsukawa, Nara, JP;
Akihiro Odagawa, Tsuchiura, JP;
Yasunari Sugita, Osaka, JP;
Mitsuo Satomi, Katano, JP;
Yoshio Kawashima, Neyagawa, JP;
Nozomu Matsukawa, Nara, JP;
Akihiro Odagawa, Tsuchiura, JP;
Yasunari Sugita, Osaka, JP;
Mitsuo Satomi, Katano, JP;
Yoshio Kawashima, Neyagawa, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A magnetoresistive element of the present invention includes a multilayer structure that includes a non-magnetic layer () and a pair of ferromagnetic layers () stacked on both sides of the non-magnetic layer (). A resistance value differs depending on a relative angle between the magnetization directions of the ferromagnetic layers () at the interfaces with the non-magnetic layer (). The composition of at least one of the ferromagnetic layers () in a range of 2 nm from the interface with the non-magnetic layer () is expressed by (MO)Z, where Z is at least one element selected from the group consisting of Ru, Os, Rh, Ir, Pd, Pt, Cu, Ag, and Au, M is at least one element selected from the group consisting of elements other than Z and O and includes a ferromagnetic metal, and x, y, and z satisfy 0.33<y/x<1.33, 0<x, 0<y, and 0≦z≦0.4. This magnetoresistive element can have excellent heat resistance and magnetoresistance characteristics.