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Write head for high anisotropy media

A technology for writing magnetic heads and media, applied in the direction of magnetic heads using thin films, magnetic recording heads, orthogonal magnetization heads, etc., and can solve problems such as undetermined writer technology

Inactive Publication Date: 2004-10-06
SEAGATE TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But still not confirmed for 1Tbit / in 2 The best writer technology for

Method used

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  • Write head for high anisotropy media
  • Write head for high anisotropy media
  • Write head for high anisotropy media

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Embodiment Construction

[0022] The present invention includes a magnetic write head for use with a magnetic recording medium; a magnetic disk drive including the write head; and a method for recording data bits into a magnetic storage medium using the write head. figure 1 is a schematic diagram of a disk drive 10 employing a magnetic write head constructed in accordance with the present invention. The disk drive includes a housing 12 (the upper portion removed and the lower portion visible in the figure) which is sized and configured to contain the various components of the disk drive. The disc drive includes a spindle motor 14 for rotating at least one magnetic storage medium 16, in this case a magnetic disc, within a housing. Contained within the housing 12 is at least one arm 18 , with each arm 18 having a first end 20 of a recording and / or reading head or slider 22 and a second end 24 pivotally mounted on a shaft by a bearing 26 . An actuator motor 28 is located at the second end 24 of the arm f...

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Abstract

A write head (66) for writing information bits to magnetic storage media (94) comprises a first write pole (72) for producing a first magnetic field in a first direction and a second write pole (70) for producing a second magnetic field such that the combined field from the two poles lies either substantially along the first direction or in a second direction that is substantially orthogonal to the first direction. The second write pole includes a free layer (76) having magnetization controlled by spin transfer torque, and a first spacer (82) positioned between the free layer and the first write pole. The write head can further include a pinned layer (78) and a second spacer (80) positioned between the pinned layer and the free layer. A disc drive (10) that includes the write head and a method of writing to magnetic storage media that utilizes the write head are also included.

Description

[0001] Related application reference [0002] This application claims the benefit of US Provisional Patent Application No. 60 / 307774, filed July 24,2001. Background of the invention [0003] This invention relates to magnetic devices, and more particularly to write heads for use in disk drives. [0004] A recording head used with magnetic storage media typically includes a writer and a reader, which respectively record and detect magnetic regions within the disk that rotate under the head. A writer in a conventional recording head may include a coil that wraps one or more turns around an iron yoke. The writer operates by passing a circuit through a coil, which produces a magnetic field that aligns the magnetization of the yoke in the direction of the magnetic field. For a longitudinal writer, the magnetic field mainly extends between the extremes and also partially into the medium. For perpendicular writers, a soft underlayer is typically used in the storage medium so that ...

Claims

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Application Information

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IPC IPC(8): G11B5/00G11B5/012G11B5/02G11B5/09G11B5/127G11B5/31H01F10/32
CPCG11B5/012G11B5/09G11B5/313H01F10/3272G11B5/1278G11B2005/0002B82Y25/00G11B5/3146G11B5/02G11B2005/0029G11B5/3133G11B5/127G11B2005/0005H01F10/3286
Inventor M·W·科文格顿T·M·科劳弗德G·J·帕克尔P·A·范德海也顿
Owner SEAGATE TECH LLC