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:
Apr. 23, 1996
Filed:
Apr. 13, 1994
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A magneto-resistive head has an upper shield layer, a lower shield layer spaced a distance from the upper shield layer, a magneto-resistive layer disposed over the lower shield layer, a shunt layer disposed adjacent to the magneto-resistive layer for giving a magnetic bias field to the magneto-resistive layer, and a electrode layer in contact with the magneto-resistance device and the shunt layer for providing an electric current to both of the magneto-resistive layer and the shunt layer electric current. The magneto-resistive layer, the shunt layer and the electrode layer are disposed between the upper shield and the lower shield. The shunt layer consist of molybdenum having a grain size more than 150 angstrom. The shunt layer has low specific resistance. Therefore, the thickness of the shunt layer can be reduced. As a result, the distance between the upper and lower shield layer can be reduced. Consequently, the gap length of the magneto-resistive head is narrower than prior art magnetic heads.