KR950030071A - Short-wavelength magneto-optical recording media - Google Patents

Short-wavelength magneto-optical recording media Download PDF

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Publication number
KR950030071A
KR950030071A KR1019940008763A KR19940008763A KR950030071A KR 950030071 A KR950030071 A KR 950030071A KR 1019940008763 A KR1019940008763 A KR 1019940008763A KR 19940008763 A KR19940008763 A KR 19940008763A KR 950030071 A KR950030071 A KR 950030071A
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KR
South Korea
Prior art keywords
layer
optical recording
magneto
film
short
Prior art date
Application number
KR1019940008763A
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Korean (ko)
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KR100236418B1 (en
Inventor
안용진
Original Assignee
김광호
삼성전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Priority to KR1019940008763A priority Critical patent/KR100236418B1/en
Publication of KR950030071A publication Critical patent/KR950030071A/en
Application granted granted Critical
Publication of KR100236418B1 publication Critical patent/KR100236418B1/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2403—Layers; Shape, structure or physical properties thereof

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)

Abstract

본 발명은 단파장용 광자기 기록매체에 관한 것으로, 좀 더 상세하게는 기판(1)상에 유전체막(2), 기록막(3), 절연막(4) 및 반사막(5)이 순차적으로 형성되어 있는 광자기 기록매체에 있어서, 상기 기록막(3)을 NdTbFeCo재생층(31) 및 TbFeCo기록층(33)의 2층으로 형성시키고 상기 NdTbFeCo재생층(31)과 TbFeCo기록층(33)의 사이에 중간층(32)을 형성시키므로써 종래의 기록매체에 비해 단파장 레이저에서의 커회전각이 우수하며 경시변화에 따른 신뢰성 면에서도 보자력 및 C/N비가 거의 감소되지 않는 단파장용 광자기 기록매체에 관한 것이다.The present invention relates to a short-wavelength magneto-optical recording medium. More specifically, the dielectric film 2, the recording film 3, the insulating film 4 and the reflective film 5 are sequentially formed on the substrate 1, In a magneto-optical recording medium, the recording film 3 is formed of two layers, an NdTbFeCo reproducing layer 31 and a TbFeCo recording layer 33, and between the NdTbFeCo reproducing layer 31 and the TbFeCo recording layer 33. By forming the intermediate layer 32 on the optical fiber, the shorter wavelength is better than the conventional recording medium, and the coercive force and the C / N ratio are hardly reduced in terms of reliability over time. will be.

Description

단파장용 광자기 기록매체Short-wavelength magneto-optical recording media

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명의 단파장용 광자기 기록매체의 개략적인 단면도이며, 제3도는 본 발명과 비교예에 따른 단파장용 광자기 기록매체의 반복재생 횟수에 따른 보자력의 변화를 나타낸 그래프이고, 제4도는 본 발명과 비교예에 다른 단파장용 광자기 기곡매체의 반복재생 횟수에 따른 C/N비 (carrier to noise ratio)의 변화를 나타낸 그래프이다.2 is a schematic cross-sectional view of a short wavelength magneto-optical recording medium of the present invention, and FIG. 3 is a graph showing a change in the coercivity with respect to the number of times of repeating reproduction of the short-wavelength magneto-optical recording medium according to the present invention and a comparative example. FIG. 10 is a graph showing a change in carrier to noise ratio according to the number of repetitive reproduction times of the short-wavelength magneto-optical medium according to the present invention and the comparative example.

Claims (4)

기판(1)상에 유전체막(2), 기록막(3), 절연막(4)및 반사막 (5)이 순차적으로 형성되어 있는 광자기 기록 매체에 있어서, 상기 기록막(3)을 NdTbFeCo재생층(31) 및 TbFeCo기록층(33)의 2층으로 형성시키고 상기 NdTbFeCo재생층(31)과 TbFeCo기록층(33)의 사이에 중간층 (32)을 형성시켜서 된 것을 특징으로 하는 단파장용 광자기 기록매체.In a magneto-optical recording medium in which a dielectric film 2, a recording film 3, an insulating film 4, and a reflective film 5 are sequentially formed on a substrate 1, the recording film 3 is an NdTbFeCo reproducing layer. (31) and the TbFeCo recording layer 33, and the intermediate layer 32 is formed between the NdTbFeCo reproducing layer 31 and the TbFeCo recording layer 33, characterized in that the short-wavelength magneto-optical recording media. 제1항에 있어서, 상기 중간층(32)이 SiN, TiN 및 AlN로 구성된 군으로부터 선택된 물질로 이루어지는 것을 특징으로 하는 단파자용 광자기 기록매체.The magneto-optical recording medium of claim 1, wherein the intermediate layer (32) is made of a material selected from the group consisting of SiN, TiN, and AlN. 제1항에 있어서, 상기 재생층(31)의 두께가 100Å∼500Å이고, 상기 기록층(33)의 두께가 150Å∼1000Å인 것을 특징으로 하는 단파장용 광자기 기록매체.The short-wavelength magneto-optical recording medium according to claim 1, wherein the reproduction layer (31) has a thickness of 100 mW to 500 mW and the recording layer (33) has a thickness of 150 mW to 1000 mW. 제1항 또는 제2항에 있어서, 상기 중간층(32)의 두께가 10A∼100A인 것을 특징으로 하는 단파장용 광자기 기록매체.The short wavelength magneto-optical recording medium according to claim 1 or 2, wherein the intermediate layer (32) has a thickness of 10A to 100A. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940008763A 1994-04-25 1994-04-25 Magneto-optical recording medium for short wavelength KR100236418B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940008763A KR100236418B1 (en) 1994-04-25 1994-04-25 Magneto-optical recording medium for short wavelength

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940008763A KR100236418B1 (en) 1994-04-25 1994-04-25 Magneto-optical recording medium for short wavelength

Publications (2)

Publication Number Publication Date
KR950030071A true KR950030071A (en) 1995-11-24
KR100236418B1 KR100236418B1 (en) 1999-12-15

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KR1019940008763A KR100236418B1 (en) 1994-04-25 1994-04-25 Magneto-optical recording medium for short wavelength

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Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2553720B2 (en) * 1989-12-14 1996-11-13 パイオニア株式会社 Magneto-optical disk

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