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FePt nanometer cluster magnetic recording media

An iron-platinum, nano-technology, applied in the field of ultra-high density magnetic data storage, can solve the problems of high cost of nano-imprint stencils and unsuitable for mass production.

Active Publication Date: 2013-04-24
李冬梅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high cost of nanoimprint templates made by electron beam lithography, it is not economically suitable for mass production.

Method used

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  • FePt nanometer cluster magnetic recording media
  • FePt nanometer cluster magnetic recording media
  • FePt nanometer cluster magnetic recording media

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Experimental program
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Embodiment Construction

[0013] Embodiments of the present invention will be described below with reference to the drawings.

[0014] Figure 1 shows the nanoporous anodized aluminum template (marked in 1, referred to as the template hereinafter). Its pore size (marked in 2) can range from 1 nanometer to 200 nanometers, and can be used up to 750cm 2 (about 120in 2 ) on a large area. The hole-to-hole spacing (indicated by 3) can be in the range of 5 nanometers. Such stencils can be easily and inexpensively made and are commercially available. Highly ordered arrays of nanoholes provide access to magnetic lattices that can be fabricated by nanoimprint lithography. The controllability of the hole size can be used to adjust the size of the magnetic points in the lattice and the distance between them. Therefore, the stencil with very small nanopores and spacing can serve well for providing higher density data storage. It is worth noting that if the hole size is too small, the probability of successful ...

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Abstract

The invention provides a technology of nanometer imprinting etch combining with nanopore anodised aluminium masterplate, sending the aluminium masterplate to a FePt thin film, forming a FePt nanometer dot matrix magnetic data information storage media. Data information storage density of the FePt nanometer dot matrix magnetic storage media (between 500Gb / in2 to 5Tb / in2) depends on aperture sizes of the nanopore anodised aluminium masterplate (from 100nanometers to 10nanometers). To be specific, if an aperture size of a masterplate is 25nanometers, FePt nanometer dot matrix magnetic recording media data information storage is 1 Tb (1012) / in2.

Description

technical field [0001] In a broad sense, the present invention is an invention related to ultra-high density magnetic data storage technology. More specifically, it is a nano-lattice fabrication method involving ultra-high-density perpendicular magnetic data storage. Background technique [0002] As early as when computers were invented by humans, magnetic recording has played an important role in data information storage. For example, in terms of mass data storage, hard disk drive technology has the advantages of high byte storage density and long service life. The magnetic domains that characterize the direction of magnetization in magnetic materials can have two opposite directions, which represent "1" and "0", respectively. The size of this magnetic domain depends largely on the magnetic crystal anisotropy constant K of the material itself. u . The current market density is 100Gb (10 9 ) / in 2 The magnetic recording medium, its magnetic domain (or the smallest magne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B5/62G11B5/851
Inventor 徐永兵杨阳
Owner 李冬梅