KR900003278Y1 - Vertical magnetic recording carrier - Google Patents

Vertical magnetic recording carrier Download PDF

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Publication number
KR900003278Y1
KR900003278Y1 KR2019860011913U KR860011913U KR900003278Y1 KR 900003278 Y1 KR900003278 Y1 KR 900003278Y1 KR 2019860011913 U KR2019860011913 U KR 2019860011913U KR 860011913 U KR860011913 U KR 860011913U KR 900003278 Y1 KR900003278 Y1 KR 900003278Y1
Authority
KR
South Korea
Prior art keywords
magnetic recording
vertical magnetic
recording medium
vertical
recording carrier
Prior art date
Application number
KR2019860011913U
Other languages
Korean (ko)
Other versions
KR880005115U (en
Inventor
김종기
Original Assignee
주식회사 금성사
구자학
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.)
Filing date
Publication date
Application filed by 주식회사 금성사, 구자학 filed Critical 주식회사 금성사
Priority to KR2019860011913U priority Critical patent/KR900003278Y1/en
Publication of KR880005115U publication Critical patent/KR880005115U/en
Application granted granted Critical
Publication of KR900003278Y1 publication Critical patent/KR900003278Y1/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/85—Coating a support with a magnetic layer by vapour deposition
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0026—Pulse recording
    • G11B2005/0029—Pulse recording using magnetisation components of the recording layer disposed mainly perpendicularly to the record carrier surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature

Landscapes

  • Magnetic Record Carriers (AREA)

Abstract

내용 없음.No content.

Description

수직 자기기록매체Vertical magnetic recording media

제1도는 본 고안의 구성을 보인 단면도.1 is a cross-sectional view showing the configuration of the present invention.

제2도는 본 고안 수직 자기기록매체의 특성 그래프.2 is a characteristic graph of the vertical magnetic recording medium of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1, 1' : 비자성 체층 2 : 자성체층1, 1 ': nonmagnetic layer 2: magnetic layer

본 고안은 수직 자기기록매체에 관한 것으로, 특히 Co-Cr-Ta 합금을 박막 적층구조로 형성하여 수직자기이방성이 단층 Co-Cr 기록체보다 월등히 향상되도록 한 수직 자기기록매체에 관한 것이다.The present invention relates to a vertical magnetic recording medium, and more particularly, to a vertical magnetic recording medium in which a Co-Cr-Ta alloy is formed in a thin film stack structure so that vertical magnetic anisotropy is significantly improved than a single layer Co-Cr recording material.

종래에는 Co-Cr 합금을 PET소재위에 1000-1500Å정도로 코팅한 수직 자기기록매체가 이용되고 있으나, 이와같이 Co-Cr이 단층으로 형성된 수직 자기기록매체는 수직방향의 자기 이방성이 작아서 히스테리시스곡선의 각형비(squareness ratio)가 4.3정도 밖에 되지 않으므로 주파수 특성 및 출력 특성이 좋지 않은 문제점이 있었다 .Conventionally, a vertical magnetic recording medium having a Co-Cr alloy coated on a PET material at about 1000-1500Å has been used. However, a vertical magnetic recording medium having Co-Cr formed as a single layer has a small magnetic anisotropy in the vertical direction and thus has a square ratio of hysteresis curve. Since the squareness ratio is only about 4.3, the frequency characteristics and the output characteristics are poor.

본 고안은 이러한 종래의 문제점을 해소하기 위하여 안출한 것으로 종래 자기기록매체에 사용되었던 Co-Cr 합금에 Ta를 혼합하여 Co-Cr-Ta의 다적층 구조로 형성하면서 비자성체와 자성체를 교대로 적층하여 수직자기 이방성을 향상시켜 각형비를 7.6까지 증가시킴으로써 재생시 주파수 특성 및 출력특성이 향상되도록 한 것인바, 이러한 본 고안을 첨부한 도면에 의하여 상세히 설명하면 다음과 같다.The present invention has been devised to solve such a conventional problem. A non-magnetic material and a magnetic material are alternately laminated while Ta is mixed with a Co-Cr alloy used in a conventional magnetic recording medium to form a multi-layered structure of Co-Cr-Ta. By improving the vertical magnetic anisotropy to increase the angular ratio up to 7.6 to improve the frequency characteristics and output characteristics during reproduction, as described in detail by the accompanying drawings of the present invention.

제1도는 본 고안 수직 자기기록매체의 구성을 보이기 위하여 중가부를 생략한 상태의 단면도로서, 이에 도시한 바와 같이 PET소재지지체(P)위에 (CO85Cr15)70Ta30의 비자성 체층(1)(1')과 (Co85Cr15)90Ta10의 자성체증(2)을 교대로 적층 코팅하되, 비자성체층(1)과 자성체층(2)은 500Å정도로 코팅하고 비자성체층(1')은 200Å정도로 코팅하여 전체두께가 6100Å정도로 코팅한 것이다.FIG. 1 is a cross-sectional view of the vertical magnetic recording medium of the present invention, in which a middle portion is omitted. As shown in FIG. 1, a nonmagnetic body layer of (CO 85 Cr 15 ) 70 Ta 30 (1) is formed on a PET material support (P). ) (1 ') and (Co 85 Cr 15 ) 90 Ta 10 of the magnetic material (2) is alternately laminated coating, but the nonmagnetic layer (1) and the magnetic layer (2) is coated to about 500Å and the nonmagnetic layer (1 ') Is coated about 200Å and the total thickness is about 6100Å.

이와같이 된 본 고안 수직 자기기록매체에 수직방향으로 자화시켜 VSM(Vibrating Sample magnetometer)등으로 히스테리시스 곡선을 측정하면 제2도와 같이 Co-Cr을 단층으로 코팅한 기존의 자기기록매체보다 수직방향의 항자력 항자력Hcv이 커지게 되어 길이 방향의 항자력(Hc')에 대한 수직방향의 (Hcv)의 비, 즉 각형비(Hcv/Hcl)가 증가하게 되어 결과적으로 주파수 및 출력특성이 증가하게 된다.When the hysteresis curve is measured by the magnetization in the vertical direction to the vertical magnetic recording medium as described above and measured using a Vibrating Sample magnetometer (VSM), as shown in FIG. Hc v becomes larger and the ratio of the vertical force (Hc v ) to the longitudinal coercive force (Hc '), that is, the angular ratio (Hc v / Hc l ), increases, resulting in an increase in frequency and output characteristics. .

제2도에서 A는 다적층 Co-Cr-Ta이 사용된 본 고안 자기기록매체에 따른 히스테리시스 곡선이고, B는 단층 Co-Cr이 사용된 종래 자기기록매체에 따른 히스테리시스곡선을 보인 것이다.In FIG. 2, A is a hysteresis curve according to the inventive magnetic recording medium using a multi-layered Co-Cr-Ta, and B is a hysteresis curve according to a conventional magnetic recording medium using a single layer Co-Cr.

상술한 바와 같이된 본 고안 자기기록매체는 비자성체와 자성체를 번갈아 가면서 적층시킴으로써 수직방향의 자기이방성을 향상시켜 수직방향의 향자력(Hcv)이 단층매체보다 크게됨과 동시에 길이방향의 향자력(Hcl)을 적게하여 각형비(Hcv/Hcl)를 증가할 수 있게 되므로 자기기록매체의 주파수 및 출력특성이 향상되는 이점이 있다.The magnetic recording medium of the present invention as described above improves the magnetic anisotropy in the vertical direction by alternately stacking the nonmagnetic material and the magnetic material, so that the vertical fragrance force (Hc v ) is larger than that of the single layer medium and at the same time the longitudinal fragrance force ( less to the square Hc l) can be increased, so the ratio (v Hc / Hc l) has the advantage that the frequency and output characteristics of the magnetic recording medium is improved.

Claims (1)

소재지지체(P)위에 Co-Cr-Ta합금의 비자성체층(1)(1')과 자성체층(2)을 교대로 여러층으로 적층 코팅하여 구성함을 특징으로 하는 수직 자기기록매체.A vertical magnetic recording medium comprising a non-coating layer (1) (1 ') and a magnetic layer (2) of Co-Cr-Ta alloy alternately laminated on a material support (P).
KR2019860011913U 1986-08-07 1986-08-07 Vertical magnetic recording carrier KR900003278Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019860011913U KR900003278Y1 (en) 1986-08-07 1986-08-07 Vertical magnetic recording carrier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019860011913U KR900003278Y1 (en) 1986-08-07 1986-08-07 Vertical magnetic recording carrier

Publications (2)

Publication Number Publication Date
KR880005115U KR880005115U (en) 1988-05-11
KR900003278Y1 true KR900003278Y1 (en) 1990-04-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019860011913U KR900003278Y1 (en) 1986-08-07 1986-08-07 Vertical magnetic recording carrier

Country Status (1)

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KR (1) KR900003278Y1 (en)

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KR880005115U (en) 1988-05-11

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