Invention Grant
- Patent Title: Magnetoresistive head including magnetoresistive effect film of fixed layer, non-magnetic layer, insulating barrier layer and free layer, and magnetic recording device with magnetoresistive head
- Patent Title (中): 磁阻头包括固定层，非磁性层，绝缘阻挡层和自由层的磁阻效应膜，以及具有磁阻头的磁记录装置
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Application No.: US12367574Application Date: 2009-02-09
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Publication No.: US08149549B2Publication Date: 2012-04-03
- 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: JP2008-160178 20080619
- Main IPC: G11B5/39
- IPC: G11B5/39
Abstract:
A magnetoresistive head is provided with high reliability and produced at a high yield rate. The magnetoresistive head includes a lower magnetic shield layer, an upper magnetic shield layer, a magnetoresistive effect film, and means for causing a current to flow in the direction of the thickness of the magnetoresistive effect film. The magnetoresistive effect film is provided between the lower magnetic shield layer and the upper magnetic shield layer. The magnetoresistive effect film is composed of a fixed layer, a non-magnetic layer, an insulating barrier layer and a free layer. The four layers of the magnetoresistive effect film are formed in this order. The insulating barrier layer is an oxide layer containing at least one of titanium and nickel.
Public/Granted literature
- US20090316292A1 MAGNETORESISTIVE HEADS AND MAGNETIC RECORDING DEVICE Public/Granted day:2009-12-24
Information query
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