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:
Aug. 31, 1999
Filed:
Mar. 25, 1997
Minoru Hashimoto, Kanagawa, JP;
Nobuhiro Sugawara, Kanagawa, JP;
Toshihiko Yaoi, Kanagawa, JP;
Hiroshi Kano, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
A magneto-resistance effect device (MR device) in which stable magneto-resistance characteristics may be achieved even if a layer of a soft magnetic material is reduced in width. The MR device includes a layer of a soft magnetic material 1, a rear end electrode 4, connected to one longitudinal end of the layer of a soft magnetic material 1, and a forward end electrode 5 connected to the opposite end of the soft magnetic material 1. On both ends of the layer of the soft magnetic material 1 are arranged magnetic domain stabilizers 2, 3 generating a bias magnetic field having a component parallel to the direction of width of the layer of a soft magnetic material 1. If the bias magnetic field sufficient to overcome the longitudinal magnetostatic anisotropy can be impressed, the direction of magnetization D.sub.f of the mono-layer soft magnetic material 1 is oriented in the direction of width. The electrical resistance of the magnetic domain stabilizers 2, 3 is selected to be larger than that of the soft magnetic material 1 for suppressing loss of the sense current i. The MR device 10 can be applied with advantage to a so-called vertical type MR head.