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Magnetic memory medium and its mfg method

A magnetic storage and media technology, applied in information storage, record carrier manufacturing, recorded information storage, etc., can solve the problems of increased storage surface density, uniform particle size of magnetic particles, and uncertainty of uniform particle size of magnetic particles, etc. Achieve high vertical anisotropy, increase recording density, and high coercivity

Inactive Publication Date: 2005-03-30
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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Problems solved by technology

[0006] However, the magnetic particles of this dielectric material are prepared by self-assembly method, the particle size of the magnetic particles is uniform and uncertain, and if the size of the magnetic particles is further reduced, a superparamagnetic phenomenon will occur, thus limiting the storage areal density of the dielectric material. Further improve
[0007] In order to solve the problem in the prior art that the magnetic particle size of the magnetic medium material is uniform and uncertain, and further reducing the size of the magnetic particle will produce a superparamagnetic phenomenon, thereby limiting the storage density of the medium material, the present invention provides a magnetic material form Highly ordered, high-density magnetic media materials

Method used

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  • Magnetic memory medium and its mfg method
  • Magnetic memory medium and its mfg method
  • Magnetic memory medium and its mfg method

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Embodiment Construction

[0017] see figure 1 and figure 2 , the magnetic storage medium 10 selected by the present invention comprises: a substrate, the substrate has a micropore array uniformly arranged; a magnetic material, the magnetic material is deposited in the micropore array of the substrate, wherein the substrate is a carbon nanotube array 12, the magnetic material is CoCrXYZ, where X is tantalum (Ta), niobium (Nb) or zirconium (Zr), Y is platinum (Pt), palladium (Pd) or gold (Au), and Z is boron (P) , phosphorus (P), nitrogen (N) or oxygen (O). The carbon nanotube array 12 can be formed by passing carbon source gas such as methane into the reaction chamber, and under the action of a catalyst, the carbon nanotube array 12 can be formed after a certain period of chemical reaction. The diameters of the carbon nanotubes are uniformly 1 to 5 nanometers, preferably 1 to 3 nanometers, closely distributed between the carbon nanotubes, and the spacing is 2 to 10 nanometers, and the preferred spaci...

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Abstract

Magnetic storage media is composed of array of nano carbon tubes and magnetic material deposited inside micropores of the said nano carbon tubes. The magnetic material is in columnar bodies limited by shape of nano carbon tube. thus, the columnar bodies possess higher vertical nonistropic magnetism. There is higher coercive force in vertical direction, thus super paramagnetic phenomena will not occur caused by influence from temperature variation. The disclosed magnetic storage media possesses higher recording density reaching to 6.45X1013 bit / in2.

Description

【Technical field】 [0001] The present invention relates to a magnetic storage medium and a manufacturing method thereof, more specifically, the present invention relates to a high-density magnetic storage medium and a manufacturing method thereof. 【Background technique】 [0002] With the development of information technology, the requirements for information storage density are increasing day by day, and the key to increasing its storage capacity on a limited area is to increase the recording density of the medium material. The traditional method is to reduce the size of the medium material so that each bit of information occupies The number of particles reaches hundreds, but with this method, the smaller the particle size of the dielectric material, the less stable its performance, resulting in a superparamagnetic phenomenon. High-density magnetic media materials require media with high magnetization and coercive force. [0003] In order to increase the information storage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B5/62G11B5/74G11B5/84H01F1/047
Inventor 陈杰良
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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