Invention Grant
- Patent Title: Magnetic head and magnetic recording system
- Patent Title (中): 磁头和磁记录系统
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Application No.: US12272088Application Date: 2008-11-17
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Publication No.: US08625237B2Publication Date: 2014-01-07
- Inventor: Tomio Iwasaki
- Applicant: Tomio Iwasaki
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: JP2007-324791 20071217
- Main IPC: G11B5/39
- IPC: G11B5/39

Abstract:
A magnetic reproduction head includes a lower magnetic shield layer, an upper magnetic shield layer, a magnetoresistive film formed between the lower and the upper magnetic shield layers, a refill film in an element height direction disposed in contact with a surface opposite a floating surface of the magnetoresistive film, and a refill film in a track width direction disposed on a side wall surface of the magnetoresistive film. The magnetoresistive film is a tunneling magnetoresistive film including a free layer, an insulating barrier layer, and a fixed layer. The insulating barrier layer is one of a magnesium oxide film, an aluminum oxide film, and a titanium oxide film which contains at least one of nitrogen and silicon.
Public/Granted literature
- US20090154029A1 MAGNETIC HEAD AND MAGNETIC RECORDING SYSTEM Public/Granted day:2009-06-18
Information query
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