Invention Grant
- Patent Title: Magneto-resistive element, thin film magnetic head, magnetic head device, and magnetic recording/reproducing apparatus
- Patent Title (中): 磁阻元件，薄膜磁头，磁头装置和磁记录/重放装置
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Application No.: US11623493Application Date: 2007-01-16
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Publication No.: US08000063B2Publication Date: 2011-08-16
- Inventor: Atsushi Yamaguchi , Kei Hirata , Satoshi Miura , Yoshihiro Tsuchiya , Kiyoshi Noguchi
- Applicant: Atsushi Yamaguchi , Kei Hirata , Satoshi Miura , Yoshihiro Tsuchiya , Kiyoshi Noguchi
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2006-112462 20060414
- Main IPC: G11B5/39
- IPC: G11B5/39
Abstract:
A magneto-resistive element includes a lower magnetic shield film and a magneto-resistive film disposed above the lower magnetic shield film. The lower magnetic shield film includes a lower shield layer and an upper shield layer. The upper shield layer is amorphous or microcrystalline, made of a NiFe or CoFe composition containing B or P, and deposited on the lower shield layer. The lower shield layer is a magnetic conductive layer which is amorphous or microcrystalline with a crystal grain size equal to or less than 20 nm.
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