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. 28, 1999
Filed:
Sep. 10, 1997
Masafumi Takiguchi, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A magnetoresistance effect device and a magnetic head according to the present invention exhibit preferable magnetic characteristics and an excellent corrosion resistance. The magnetoresistance effect device includes an antiferromagnetic body formed in a fcc (face-centered cubic) structure and in an irregular phase and having a composition of A.sub.X --Mn.sub.1-X wherein A is at least one of Rh and Ru, and X is in a range from 0.05 to 0.25; and a ferromagnetic body whose magnetization state is controlled by the antiferromagnetic body. Moreover, the magnetic head includes an antiferromagnetic body formed in a fcc (face-centered cubic) structure and in an irregular phase and having a composition of A.sub.X Mn.sub.1-X wherein A is at least one of Rh and Ru, and X is in a range from 0.05 to 0.25; and a ferromagnetic body whose magnetization state is controlled by the antiferromagnetic body.