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Magnetic recording medium and method for manufacturing same

A technology for magnetic recording medium and production method, applied in magnetic recording, magnetic recording layer, data recording, etc., can solve problems such as insufficient coercive force of magnetic particles, excessive media noise, low recording density media noise, etc., to achieve Suppresses magnetic transition noise, suppresses media noise, and improves recording density

Inactive Publication Date: 2008-10-15
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large and non-uniform grain distribution in the magnetic conversion region, the magnetic conversion region is tortuous (ZigZag), and media noise (Media Noise), that is, magnetic transition noise, will be generated in the more serious part of the zigzag situation; Therefore, it cannot fully reflect the ideal write field gradient (WriteField Gradient)
In addition, because the magnetic particles forming the magnetic recording layer of the magnetic recording medium are in a continuous distribution state, the magnetic exchange coupling between the magnetic particles in the magnetic conversion region is too strong due to the lack of sufficient spacing between the magnetic particles, and the coercive Insufficient power, resulting in too much noise and reading failure
[0006] In order to meet the demand of higher magnetic recording density and improve defects such as insufficient coercive force of magnetic particles and excessive media noise in magnetic recording media in the prior art, it is necessary to provide a magnetic recording medium and a manufacturing method thereof, which can have high Recording density, low media noise, etc.

Method used

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  • Magnetic recording medium and method for manufacturing same
  • Magnetic recording medium and method for manufacturing same

Examples

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no. 1 example

[0022] see figure 1 , the horizontal magnetic recording medium provided by the first embodiment of the present invention includes a magnetic recording layer 10, and the magnetic recording layer 10 includes: a plurality of carbon nanospheres 14; For the magnetic particles 12 in a separated state, the magnetic field orientations of the magnetic particles 12 are substantially consistent, and are substantially parallel to the surface 16 of the magnetic recording layer.

[0023] Magnetic particles 12 can be selected iron, cobalt, nickel or alloys thereof used in the prior art; as CoPtCr, CoCrTa, CoCrPtB, CoCrPtNi, CoCrPtTa, CoCrPtW, CoCrPtNb, CoCrPtC or CoCrPtTaNb etc., it is a hexagonal lattice structure, easy magnetization axis is the c-axis ( figure 1 where the length direction of the magnetic particles represents the c-axis). Depend on figure 1 It can be seen that the orientations of the easy magnetization axes of the magnetic particles 12 are basically the same, and they ar...

no. 2 example

[0031] see figure 2 , the perpendicular magnetic recording medium provided by the second embodiment of the present invention includes a magnetic recording layer 100, and the magnetic recording layer 100 includes: a plurality of carbon nanospheres 104; For the magnetic particles 102 in a separated state, the magnetic field orientations of the magnetic particles 102 are basically the same, and they are basically perpendicular to the surface 106 of the magnetic recording layer.

[0032]Magnetic particles 102 can be selected iron, cobalt, nickel or alloys thereof used in the prior art; as CoPtCr, CoCrTa, CoCrPtB, CoCrPtNi, CoCrPtTa, CoCrPtW, CoCrPtNb, CoCrPtC or CoCrPtTaNb etc., it is a hexagonal lattice structure, easy magnetization axis is the c-axis ( figure 2 where the length direction of the magnetic particles represents the c-axis). Depend on figure 2 It can be seen that the orientations of the easy magnetization axes of the magnetic particles 102 are basically the sam...

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Abstract

This invention relates to one magnetic medium and its process method, wherein, the magnetic record medium comprises one magnetic record layer comprising several carbon nanometer balls and several magnetic particles in discrete status by carbon nanometer ball with same direction; magnetic record medium makes magnetic particles in discrete status by use of carbon nanometer covered particles helpful for depressing media mixture signals between particles an the nanometer ball has small radium as nanometer.

Description

【Technical field】 [0001] The invention relates to a magnetic recording medium, in particular to a horizontal magnetic recording medium, a vertical magnetic recording medium and a manufacturing method thereof. 【Background technique】 [0002] Magnetic recording media are generally divided into two types: horizontal magnetic recording media (Longitudinal Magnetic Recording Media) and perpendicular magnetic recording media (Perpendicular Magnetic Recording Media). [0003] At present, the widely used magnetic recording medium is a horizontal magnetic recording medium, which has horizontal magnetic anisotropy; the magnetic field generated by the magnetic read / write head forms a recording bit, so that the N pole and S pole of each recording bit are adjacent to it The N and S poles of the recording bit are opposite; the recording bits are arranged parallel to the plane of the recording medium; for this kind of magnetic recording medium, in order to achieve high recording density, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B5/66G11B5/667G11B5/73G11B5/84
CPCG11B5/65G11B5/656G11B5/852G11B5/657
Inventor 吕昌岳
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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