Energy assisted discrete track media with heat sink

A technology of heat sink and heat sink layer, which is applied in the direction of magnetic recording, different record carrier forms, nanotechnology for information processing, etc., and can solve the problem of not being able to provide the required magnetic field strength

Active Publication Date: 2011-03-30
WESTERN DIGITAL TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the physical limitations of the write head, conventional magne

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  • Energy assisted discrete track media with heat sink
  • Energy assisted discrete track media with heat sink
  • Energy assisted discrete track media with heat sink

Examples

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Embodiment Construction

[0026] Embodiments are described here with reference to the drawings. However, particular embodiments may be practiced without one or more of these specific details, or in combination with other known methods, materials, and devices. In the following description, numerous specific details are set forth, such as specific materials, dimensions, process parameters, etc., to provide a thorough understanding. In other instances, known manufacturing processes and equipment have not been described in specific detail in order to avoid unnecessarily obscuring claimed subject matter. Reference throughout the specification to an "embodiment" means that a particular component, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Therefore, appearances of the term "in an embodiment" in different places in this specification do not necessarily refer to the same embodiment. Furthermore, particula...

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Abstract

The invention relates to an energy assisted discrete track media with heat sink. A discrete track perpendicular magnetic recording (PMR) disk and a method of fabricating the disk are described. The PMR disk may include a heat sink layer disposed above a substrate, intermediate layers disposed above the heat sink layer, and a magnetic recording layer disposed above the intermediate layers. The magnetic recording layer may have raised and recessed areas, where a heat conductive material may be disposed within one or more of the recessed areas.

Description

technical field [0001] Embodiments described herein relate to the field of magnetic disk drives, and in particular to perpendicular magnetic recording disks for energy assisted magnetic recording drives. Background technique [0002] In magnetic recording disks, increases in areal density are achieved by reducing the grain size of the magnetic particles in the recording medium, thereby shrinking the area of ​​the data bit. However, reducing the grain size of the magnetic particles also reduces the magnetic stability of the particles. In the superparamagnetic limit, the grain size of the magnetic particles becomes so small that spontaneous magnetic reversal occurs under slight thermal agitation. To cope with the superparamagnetic limit, higher coercivity magnetic materials can be used in recording media. Using higher coercivity magnetic materials may require the application of a strong magnetic field to magnetize the recording medium during a write operation. However, conv...

Claims

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Application Information

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IPC IPC(8): G11B5/66G11B5/667G11B5/82
CPCB82Y10/00G11B5/855G11B5/82G11B5/743G11B5/7325G11B2005/0021G11B5/7369G11B5/7375G11B5/73921
Inventor E·J·钱皮恩A·F·托拉比M·R·吉本斯
Owner WESTERN DIGITAL TECH INC
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