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Super resolution film structure of light-magnet mixing memory record

A hybrid storage and thin-film structure technology, applied in the field of information storage, can solve the problem that the light spot cannot be further focused and narrowed

Inactive Publication Date: 2009-12-30
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The optical diffraction limit is that light with a certain wavelength is focused to produce a spot. When the spot is focused to a certain extent, optical diffraction will occur, so that the spot cannot be further focused and shrunk.

Method used

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  • Super resolution film structure of light-magnet mixing memory record

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0011] see first figure 1 , figure 1 It is a schematic diagram of the super-resolution thin film structure of the optical-magnetic hybrid storage recording of the present invention. It can be seen from the figure that the super-resolution thin-film structure of the optical-magnetic hybrid storage recording of the present invention sequentially includes a substrate 1, a dielectric layer 2, a super-resolution mask layer 3, Thermal protective layer 4, magnetic recording layer 5 and protective layer 6, described substrate 1 is glass, described dielectric layer 2, thermal protective layer 4 and protective layer 6 are made of SiN or SiO2; Described super-resolution The mask layer 3 is composed of Si(x)Ag(1-x) alloy, wherein the value range of x is 0

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Abstract

The invention relates to a super-resolution membrane structure for photomagnetic hybrid recording, which is characterized in that the super-resolution membrane structure for photomagnetic hybrid recording comprises a substrate, a dielectric layer, a super-resolution mask layer, a thermal-protective layer, a magnetic recording layer and a protective layer in turn, wherein the substrate is glass; the dielectric layer, the thermal-protective layer and the protective layer are formed by SiN or SiO2; the super-resolution mask layer consists of Si(x)Ag(1-x) alloy, wherein X is more than 0 and less than 1; and magnetic recording layer is TbFeCo. The recording magnetic domain of 100 nanometers is obtained through auxiliary heating by blue light the laser wavelength of which is 406.7 nanometers and recording by an objective with a numerical aperture of 0.80 and an external magnetic field of 300 oersteds.

Description

technical field [0001] The invention relates to information storage, in particular to a super-resolution film structure for optical-magnetic hybrid storage and recording. Background technique [0002] With the rapid development of modern society and science and technology, the amount of information is increasing rapidly, and the requirements for information storage capacity are getting higher and higher. At present, the magnetic recording density increases by more than 60% every year, and the further improvement of the magnetic recording density is limited by the superparamagnetic effect and the optical diffraction limit. When the ratio of the magnetic storage energy of the recording bit to the thermal disturbance energy -K u V / κ B When T is close to 40, the thermal disturbance will affect the stability of the recorded magnetic domain, that is, the superparamagnetic effect [see Schlesinger TE, RauschT.An integrated read / write head for hybrid recording.Jap ApplPhys, 2002, 4...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/10G11B7/24G02B1/14G11B7/24038G11B7/242G11B7/2531G11B7/254
Inventor 焦新兵魏劲松干福熹
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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