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Patterned magnetic media having an exchange bridge structure connecting islands

A magnetic recording medium and patterning technology, applied in the direction of pattern record carrier, different record carrier forms, nanotechnology for information processing, etc., can solve the problems of island magnetization instability and magnetostatic coupling increase

Inactive Publication Date: 2009-07-01
HITACHI GLOBAL STORAGE TECH NETHERLANDS BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increased magnetostatic coupling can destabilize island magnetization

Method used

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  • Patterned magnetic media having an exchange bridge structure connecting islands
  • Patterned magnetic media having an exchange bridge structure connecting islands
  • Patterned magnetic media having an exchange bridge structure connecting islands

Examples

Experimental program
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Embodiment Construction

[0030] figure 1 A disk drive system 100 is shown. Disk drive system 100 includes spindle 102 , magnetic recording disk 104 , motor controller 106 , actuator 108 , actuator arm / suspension 110 , and recording head 114 . The spindle 102 supports and rotates a magnetic recording disk 104 in the direction indicated by the arrow. A spindle motor (not shown) rotates spindle 102 according to control signals from motor controller 106 . The recording head 114 is supported by the actuator arm / cantilever 110 . Actuator arm / suspension 110 is connected to actuator 108 , which is configured to rotate to position recording head 114 on a desired track of magnetic recording disk 104 . Disk drive system 100 may include figure 1 Other devices, components or systems not shown. For example, multiple disks, actuators, actuator arms / suspensions and recording heads may be employed.

[0031] As the magnetic recording disk 104 rotates, the air flow generated by the rotation of the disk 104 causes ...

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Abstract

Patterned magnetic recording media and associated methods of fabrication are described. The patterned magnetic recording media includes a perpendicular magnetic recording layer that is patterned into a plurality of discrete magnetic islands. The patterned magnetic recording media also includes an exchange bridge structure formed from magnetic material that connects the islands of the perpendicular magnetic recording layer. Connecting the islands with magnetic material increases exchange coupling between the islands, which makes the islands more magnetically stable.

Description

technical field [0001] The present invention relates to the field of disk drive systems, in particular to a patterned magnetic recording medium having an exchange bridge structure connecting islands of a perpendicular magnetic recording layer and a method for forming the same. Background technique [0002] Many computer systems use disk drives for mass storage of information. Disk drives typically include one or more magnetic recording heads (sometimes called sliders) having read and write elements. The actuator arm / cantilever keeps the recording head above the disk. As the disk rotates, the air flow generated by the rotation of the disk causes the air bearing surface (ABS) side of the recording head to ride a certain height above the disk. The height depends on the shape of the ABS. As the recording head rides on the air bearing, the actuator moves the actuator arm / suspension, thereby placing the read and write elements on selected tracks of the disk. [0003] One type ...

Claims

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Application Information

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IPC IPC(8): G11B5/74G11B5/84
CPCB82Y10/00G11B5/82G11B5/743G11B5/855
Inventor 托马斯·R·奥尔布雷克特曼弗雷德·E·沙贝斯
Owner HITACHI GLOBAL STORAGE TECH NETHERLANDS BV
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