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. 01, 1997
Filed:
Jun. 07, 1995
Akio Takada, Miyagi, JP;
Kazutoshi Asada, Chiba, JP;
Sony Corporation, Tokyo, JP;
Abstract
A magneto-resistance effect thin-film magnetic head with a flux guide for efficiently guiding the signal magnetic flux from the magnetic recording medium to a magneto-resistance effect film. The flux guide is made up of a laminated structure of alternate layers of permalloy and Ti so that the number of the permalloy films is two or more. The flux guide may be formed by an underlying layer and the laminated structure formed on the underlying layer. The film thickness T1 of the permalloy film and the film thickness T2 of the Ti film preferably are such that 0 nm<T1<50 nm and 0 nm<T2<6 nm. The flux guide of the MR head may be formed easily and is excellent in magnetic characteristics. The playback signal output of the MR head may be improved without complicating the production process of the MR head.