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Vertical magnetic recording medium and magnetic recording/reproducing device

A perpendicular magnetic recording and medium technology, applied in magnetic recording, data recording, transportation and packaging, etc., can solve the problems of recording and reproduction characteristics degradation, writability degradation, etc., and achieve the effect of excellent recording and reproduction characteristics

Active Publication Date: 2010-08-04
RESONAC CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Then, when the recording head is used, the writability is degraded, and the recording and reproducing characteristics are also degraded

Method used

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  • Vertical magnetic recording medium and magnetic recording/reproducing device
  • Vertical magnetic recording medium and magnetic recording/reproducing device
  • Vertical magnetic recording medium and magnetic recording/reproducing device

Examples

Experimental program
Comparison scheme
Effect test

example 1-1

[0105] Place the glass substrate for HD in the vacuum chamber, and evacuate the vacuum chamber to 1.0×10 -5 Pa or lower.

[0106] A layer of CoNbZe with a thickness of 50 nm is formed on the substrate through the sputtering process to form a soft magnetic backing layer 2 . Next, a layer of NiFe having an fcc structure was formed to a thickness of 5 nm in an Ar atmosphere having a gas pressure of 0.6 Pa, thereby forming the liner layer 3 . Then, a layer of Ru with a thickness of 10 nm was formed in an Ar atmosphere with a gas pressure of 0.6 Pa, and the gas pressure was increased to 10 Pa to form a layer of Ru with a thickness of 10 nm, thereby forming the intermediate layer 4 .

[0107] The main recording layer and the auxiliary recording layer were sequentially formed in an Ar atmosphere having a gas pressure of 2 Pa, thereby forming the perpendicular magnetic recording medium 5 . The main recording layer is made of 90(Co12Cr18Pt)-10(SiO 2 ) with a thickness of 10nm.

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example 1-2

[0113] In addition to using Ir-10SiO in the auxiliary recording layer 2 Except for the material of the non-magnetic layer, the perpendicular magnetic recording medium in this example was manufactured in the same manner as the perpendicular magnetic recording medium in Example 1-1.

example 1-3

[0115] In addition to using Rh-10SiO in the auxiliary recording layer 2 Except for the material of the non-magnetic layer, the perpendicular magnetic recording medium in this example was manufactured in the same manner as the perpendicular magnetic recording medium in Example 1-1.

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Abstract

Provided is a method for easily manufacturing a low cost ECC type magnetic recording medium which is easily designed. A magnetic recording / reproducing device is also provided. In a vertical magnetic recording medium, at least a soft magnetic lining layer, a base layer, an intermediate layer and a vertical magnetic recording layer are arranged on a nonmagnetic substrate. The magnetic recording layer is composed of at least one main recording layer and an auxiliary recording layer. The main recording layer is composed of a layer having vertical magnetic anisotropy. The auxiliary recording layer is a multilayer film which has three or more layers and is configured by alternate lamination of soft magnetic layers and nonmagnetic layers, and the outermost layer to a nonmagnetic substrate is the soft magnetic layer.

Description

technical field [0001] The present invention relates to a perpendicular magnetic recording medium and a magnetic recording and reproducing apparatus using the same. [0002] Priority is claimed from Japanese Patent Application No. 2007-231841 filed September 6, 2007, the contents of which are hereby incorporated by reference in their entirety. Background technique [0003] In recent years, the range of applications of magnetic recording devices such as magnetic disk devices, floppy disk devices, and magnetic tape devices has greatly increased. As the importance of these magnetic recording devices has increased, the recording density of magnetic recording media used in these magnetic recording devices has greatly increased. In particular, with the introduction of MR heads and PRMLs, the surface recording density has further increased. In recent years, GMR magnetic heads, TuMR magnetic heads, and the like have been further introduced. As a result, the surface recording dens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B5/66G11B5/65G11B5/667G11B5/673G11B5/738
CPCG11B5/667G11B5/7325Y10T428/1171G11B5/7369G11B5/678
Inventor 桥本笃志
Owner RESONAC CORPORATION