Unlock instant, AI-driven research and patent intelligence for your innovation.

Write head for high anisotropy media

A technology for writing magnetic heads and media, which is applied in the direction of magnetic heads using thin films, magnetic recording heads, and orthogonally magnetized magnetic heads, and can solve problems such as undetermined writer technology

Inactive Publication Date: 2009-07-29
SEAGATE TECH LLC
View PDF1 Cites 1 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Write head for high anisotropy media
  • Write head for high anisotropy media
  • Write head for high anisotropy media

Examples

Experimental program
Comparison scheme
Effect test

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A write head (66) for writing information bits onto a magnetic storage medium (94) includes a first write electrode (72) for a first magnetic field in a first direction, and a second write electrode ( 70) for generating a second magnetic field such that the combined magnetic field from the two electrodes is substantially along the first direction or in a second direction orthogonal to the first direction. The second write electrode includes a free layer (76) having a magnetization controlled by spin transfer torque, and a first spacer (82) positioned between the free layer and the second write electrode. The write head may also include a pinned layer (78) and a second spacer (80) between the pinned layer and the free layer. Also included is a disk drive (10) including a write head and a method of writing to a magnetic storage medium using the write head.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G11B5/127G11B5/012G11B5/02G11B5/00G11B5/09G11B5/31H01F10/32
CPCG11B2005/0005H01F10/3286B82Y25/00H01F10/3272G11B5/02G11B5/313G11B2005/0002G11B5/3133G11B2005/0029G11B5/1278G11B5/012G11B5/127G11B5/09G11B5/3146
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