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Photomagnetic mixed storing material with high-coercive fore and producing method thereof

A hybrid storage, opto-magnetic technology, applied in the direction of information storage, magnetic layer coating, recording information storage, etc., can solve the problems of difficult guarantee of material performance, complex preparation process, etc., achieve significant application value, improve coercive force, storage The effect of performance improvement

Inactive Publication Date: 2007-06-06
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the early days, people mainly studied multilayer films with strong coupling effects, but these preparation processes are complicated, and the performance of materials is difficult to guarantee.

Method used

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  • Photomagnetic mixed storing material with high-coercive fore and producing method thereof
  • Photomagnetic mixed storing material with high-coercive fore and producing method thereof
  • Photomagnetic mixed storing material with high-coercive fore and producing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment one: component one TbFeCo

[0015] Put the glass substrate into absolute alcohol and clean it two to three times with an ultrasonic sounder. The substrate / TbFeCo (6nm) is prepared by computer-controlled multifunctional magnetron sputtering equipment, and the easy magnetization direction is difficult to be perpendicular to the film surface. As shown in Figure 1, the experimental curve of the sample at room temperature is given.

[0016] The substrate / MgO(0.8nm) / TbFeCo(6nm) is prepared by computer-controlled multifunctional magnetron sputtering equipment, the easy magnetization direction is perpendicular to the film surface, and the coercive force is obviously increased. As shown in Figure 2, the experimental curve of the sample at room temperature is given.

Embodiment 2

[0017] Embodiment two: component two TbFeCo

[0018] Carry out cleaning treatment (as embodiment 1) to glass substrate. The easy magnetization direction of the substrate / TbFeCo (9nm) is difficult to be perpendicular to the film surface by computer-controlled multifunctional magnetron sputtering equipment. As shown in Figure 3, the experimental curve of the sample at room temperature is given.

[0019] The substrate / MgO(2nm) / TbFeCo(9nm) easy magnetization direction is perpendicular to the film surface prepared by computer-controlled multifunctional magnetron sputtering equipment, and the coercive force increases greatly. The experimental curve of the sample at room temperature is shown in Figure 4.

Embodiment 3

[0020] Embodiment three: component three TbFeCo

[0021] Carry out cleaning treatment (as embodiment 1) to glass substrate. The substrate / TbFeCo (30nm) film surface perpendicular to the direction of easy magnetization was prepared by computer-controlled multifunctional magnetron sputtering equipment, and the film has coercive force. The experimental curve of the sample at room temperature is shown in Figure 5.

[0022] The substrate / MgO(1.2nm) / TbFeCo(30nm) is prepared by computer-controlled multifunctional magnetron sputtering equipment, and the film surface is perpendicular to the easy magnetization direction, and the coercive force increases. As shown in Figure 6, the experimental curve of the sample at room temperature is given.

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Abstract

A method for preparing photo-magnetic mixed storage material with high coercive force includes utilizing radio-frequency magnetic control to sputter a layer of Mg O buffer layer first and than utilizing DC magnetic control to sputter a layer of Tb Fe Co to form a film with double layers for raising coercive force of film material.

Description

technical field [0001] The invention belongs to the technical field of magnetoelectronics and optical-magnetic hybrid recording, and in particular relates to an optical-magnetic hybrid storage material and a preparation method thereof. technical background [0002] Traditional TbFeCo materials have perpendicular anisotropy and can be used as magneto-optical storage materials and optical-magnetic hybrid storage materials. In the early days, people mainly studied multilayer films with strong coupling effect, but these preparation processes are complicated, and the performance of materials is difficult to guarantee. At present, the preparation of TbFeCo by multi-target co-sputtering method is generally paid attention to. [0003] The rapid development of information technology benefits from the improvement of material storage performance. There has been an ongoing effort to increase the storage density of materials. Therefore, finding new sample preparation methods is of gre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B11/10G11B5/66G11B5/851
Inventor 周仕明焦新兵徐振
Owner FUDAN UNIV
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