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Magnetic recording medium, manufacturing method of the same and magnetic recording device

A magnetic recording medium and recording layer technology, applied in magnetic recording, magnetic recording layer, data recording, etc., can solve problems such as inability to maintain high signal quality and Bs reduction

Inactive Publication Date: 2008-06-04
RESONAC HOLDINGS CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] However, this method has a problem in that when Cr is added to a level that ensures sufficient corrosion resistance, Bs decreases, thus failing to maintain high signal quality

Method used

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  • Magnetic recording medium, manufacturing method of the same and magnetic recording device
  • Magnetic recording medium, manufacturing method of the same and magnetic recording device
  • Magnetic recording medium, manufacturing method of the same and magnetic recording device

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Embodiment Construction

[0025] Preferred embodiments of the present invention will hereinafter be described with reference to the drawings, wherein like numerals refer to like elements throughout. The magnetic recording medium described in the embodiments is a perpendicular magnetic recording medium in which the direction of magnetization in the recording layer is directed in a direction perpendicular to the front surface of the substrate.

[0026] FIG. 1 is a schematic cross-sectional view of a substantial part of a magnetic recording medium and a magnetic head.

[0027] The magnetic recording medium 10 includes a non-magnetic substrate 11 and a seed layer 12 formed over the substrate 11 . This seed layer 12 has a function of preventing the surface state of the substrate 11 from affecting the crystallinity of a film stacked over the seed layer 12, and also has a function as an adhesive layer.

[0028] A lower soft magnetic underlayer 13 a is formed over the seed layer 12 . The lower soft magnetic ...

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Abstract

A magnetic recording medium has high corrosion resistance and high Bs, a method of manufacturing the magnetic recording medium, and a magnetic recording device. The magnetic recording medium using as a recording layer a magnetic layer has perpendicular magnetic anisotropy. A soft magnetic backing layer (upper and lower soft magnetic backing layers) formed under the recording layer is composed of a FeCoZr alloy added with at least one element of Ta and Nb and further added with Cr. This magnetic recording medium includes the soft magnetic backing layer having high corrosion resistance and high Bs and therefore, exhibits high Hc recording and high S / N performance.

Description

technical field [0001] The present invention relates to a magnetic recording medium, a method of manufacturing the same, and a magnetic recording device. Specifically, the present invention relates to a magnetic recording medium utilizing perpendicular magnetic recording, a method of manufacturing the same, and a magnetic recording apparatus. Background technique [0002] In recent years, the amount of information handled by computers has increased at a remarkable rate, and recording devices used with computers are required to achieve higher recording densities. [0003] Among many recording media, magnetic recording media such as magnetic disks in particular have a longer history than other media and are generally widely used. [0004] Most magnetic recording media supplied to the market today are in-plane magnetic recording media in which the direction of magnetization recorded in the recording layer is directed in an in-plane direction. In order to achieve higher record...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B5/64G11B5/66G11B5/73
CPCG11B5/82G11B5/667H01F10/132G11B2005/0029G11B5/702G11B5/1278Y10S428/90
Inventor 贝津功刚稻村良作
Owner RESONAC HOLDINGS CORPORATION