Magnetic memory medium and its manufacturing 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 the effects of increasing recording density, high perpendicular anisotropy, and high coercivity
CN100405468CInactive Publication Date: 2008-07-23HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
Publication Date
2008-07-23
Estimated Expiration
Not applicable · inactive patent

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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.
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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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