Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Magnetic recording medium and method for manufacturing same

A technology of magnetic recording medium and manufacturing method, which is applied in the directions of magnetic recording, magnetic recording layer, data recording, etc., can solve the problems of insufficient coercive force of magnetic particles, low recording density of media noise, and high media noise, etc. Magnetic transition noise, improving recording density, and suppressing media noise

Inactive Publication Date: 2007-03-07
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
View PDF0 Cites 2 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Magnetic recording medium and method for manufacturing same
  • Magnetic recording medium and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0022] Referring to Fig. 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 coated and separated magnetic particles 12 , the magnetic field orientations of the magnetic particles 12 are basically the same, which is basically 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 The axis is the c-axis (the c-axis is represented by the length direction of the magnetic particle in FIG. 1 ). As can be seen from Fig. 1, the orientations of the easy magnetization axes of the magnetic particles 12 are basically the same, and it is substantiall...

no. 2 example

[0031] 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; and a plurality of carbon nanospheres 104 For the magnetic particles 102 that are coated and in a separated state, the magnetic field orientations of the magnetic particles 102 are substantially consistent, and are substantially 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 The axis is the c-axis (the c-axis is represented by the length direction of the magnetic particle in FIG. 2 ). As can be seen from Fig. 2, the orientations of the easy magnetization axes of the m...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Magnetic field strengthaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com