Thermo-writing and magnetic-reading record medium having high-density and system thereof

A recording medium and high-density technology, applied in optical recording, magnetic replication, etc., can solve problems such as inability to provide magnetic flux, achieve the effect of increasing density, increasing recording density, and reducing weight

Inactive Publication Date: 2007-03-21
IND TECH RES INST
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The recording film is a traditional magneto-optical material. It uses the traditional magneto-optic thermomagnetic writing method to record signals. When reading out, it uses a giant magnetoresistive head to measure the magnetic flux to read the signal. However, traditional magneto-optical recording materials are not suitable for thermal The recording medium for writing and magnetic reading is mainly because the saturation magnetization (Ms) value at room temperature is too small to provide enough magnetic flux for the giant magnetoresistive head to read the signal

Method used

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  • Thermo-writing and magnetic-reading record medium having high-density and system thereof
  • Thermo-writing and magnetic-reading record medium having high-density and system thereof

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[0034] The high-density thermal-write-magnetic-read recording medium and its system disclosed in the present invention, please refer to FIG. 1 , include a near-field optical laser 30, a recording medium 10, and a magneto-resistive magnetic head 20, wherein the recording medium 10 includes a substrate 12 And the recording layer 11 attached to one side of the substrate 12 , and a microcylindrical lens 13 is formed between the substrate 12 and the recording layer 11 . And the substrate 12 can be a glass substrate, and a micro-cylindrical solid immersion lens (solid immersion lens; SIL) is formed on it to cover the whole bottom of the recording layer 11, so that the laser light emitted by the laser head 31 of the near-field optical laser 30 The light 311 will produce the near-field optical effect, and the size of the light spot formed on the recording layer 11 will be reduced, thereby obtaining a smaller recording bit to increase the recording density. The interface problem of fri...

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Abstract

This invention relates to a heat-writing recorder medium and its system, which reads the materials through near-field optical laser writing-in data through magnetic resistance head. The recording media comprises the following: one baseboard; one recording layer formed on side of the baseboard; multiple micro round column lens formed between the baseboard and the recording layer to generate the near-field optics effect and reduce the light point size when writing in the recording layer.

Description

technical field [0001] The invention relates to a recording medium, which is applied to a magneto-optical recording system, in particular to a high-density hot-write magnetic-read recording medium and its system combined with near-field optical writing and sensitive reading technology of a magnetoresistive magnetic head. Background technique [0002] In the field of recording media, how to increase the recording density of recording media has long been the most important issue. According to different storage principles, recording media can be divided into optical recording media and magnetic recording media. Optical recording media are limited by the optical diffraction limit, while magnetic recording media are limited by the superparamagnetic limit, making their recording density impossible. Continue to improve. [0003] In recent years, technologies such as near-field optics and optical super-resolution have been applied to optical discs to break through the diffraction l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B11/14
Inventor 黄得瑞郭博成李昭德郑尊仁
Owner IND TECH RES INST
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