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Sensor structure and magnetic recording head

A sensor and magnetic structure technology, applied in the field of magnetic read heads

Active Publication Date: 2015-09-23
WESTERN DIGITAL TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, significant challenges related to yield and sensor stability remain

Method used

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  • Sensor structure and magnetic recording head
  • Sensor structure and magnetic recording head
  • Sensor structure and magnetic recording head

Examples

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Embodiment Construction

[0017] Hereinafter, reference is made to examples of the present invention. It should be understood, however, that the invention is not limited to specific described embodiments. Rather, any combination of the following features and elements, whether related to different embodiments or not, is considered to implement and practice the invention. Further, although embodiments of the invention may achieve advantages over other possible technical solutions and / or over the prior art, whether a particular advantage is achieved by a given embodiment is not a limitation of the invention. Accordingly, the following aspects, features, embodiments and advantages are merely illustrative and are not to be considered elements or limitations of the appended claims, except where expressly recited in a claim. Likewise, reference to "the present invention" should not be taken as a generalization of any inventive subject matter disclosed herein, and should not be considered an element or limita...

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Abstract

The embodiments disclosed generally relate to a read head in a magnetic recording head. The read head utilizes a sensor structure having: a pinned magnetic structure recessed from a media facing surface; and a reader gap structure. The reader gap structure has a spacer layer recessed from the media facing surface and disposed on top of the pinned magnetic structure, a recessed first free layer partially recessed from the media facing surface and disposed on top of the barrier layer, a second free layer extending to the media facing surface an disposed on top of the barrier layer, and a cap layer extending to the media facing surface disposed atop the second free layer. The pinned magnetic structure, the spacer, and the first free layer have a common face which is on an angle relative to the media facing surface.

Description

technical field [0001] Various embodiments disclosed herein relate generally to magnetic read heads for use in hard disk drives. Background technique [0002] A magnetic hard disk drive (HDD), at the heart of a computer, typically includes a spinning disk, a slider with a read and write head, a suspension over the spinning disk, and swinging the suspension to move the read and / or write head An actuator arm positioned above a selected circular track on a rotating magnetic disk. When the disk is not spinning, the cantilever biases the slider against the surface of the disk, but when the disk is spinning, air is drawn near the media facing surface (MFS) such as the air bearing surface (ABS) of the slider. The spinning disk spins, causing the slider to ride on the air bearing a slight distance from the surface of the spinning disk. When the slider rides on the air bearings, the write and read heads are used to write the magnetic transitions corresponding to the host data. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B5/127G11B5/11
CPCG11B5/3912G01R33/093G11B5/3945G01R33/098G11B5/3909G11B5/3954G11B5/398G11B5/1272G11B5/1475
Inventor Z·高J·M·弗赖塔格K·S·霍C·H·曾K·朱
Owner WESTERN DIGITAL TECH INC
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