KR890007218A - 박막 자기헤드 - Google Patents

박막 자기헤드 Download PDF

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Publication number
KR890007218A
KR890007218A KR1019880014153A KR880014153A KR890007218A KR 890007218 A KR890007218 A KR 890007218A KR 1019880014153 A KR1019880014153 A KR 1019880014153A KR 880014153 A KR880014153 A KR 880014153A KR 890007218 A KR890007218 A KR 890007218A
Authority
KR
South Korea
Prior art keywords
magnetic
thin film
head
axial
magnetic pole
Prior art date
Application number
KR1019880014153A
Other languages
English (en)
Other versions
KR930001144B1 (ko
Inventor
깐지 나까니시
Original Assignee
원본미기재
후지샤신 필름 가부시끼 가이샤
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
Priority claimed from JP27182387A external-priority patent/JPH0760494B2/ja
Priority claimed from JP27936087A external-priority patent/JP2520670B2/ja
Application filed by 원본미기재, 후지샤신 필름 가부시끼 가이샤 filed Critical 원본미기재
Publication of KR890007218A publication Critical patent/KR890007218A/ko
Application granted granted Critical
Publication of KR930001144B1 publication Critical patent/KR930001144B1/ko

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Classifications

    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
    • G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • G11B5/3113—Details for improving the magnetic domain structure or avoiding the formation or displacement of undesirable magnetic domains
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • G11B5/3116—Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)

Abstract

내용 없음

Description

박막 자기헤드
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 제1실시예에 따른 비투자율과 자극폭의 관계를 도시한 그래프.
제2도는 제1실시예에 따른 자극길이(w)에 대한 180°자극벽거리(d)의 비(d/w)와 비투자율과의 관계를 도시한 그래프.

Claims (4)

  1. 적어도 1MHZ의 주파수를 기록 및 재생할수 있는 박막자기헤드에 있어서, 축방향 자기 이방성을 갖는 연금속 자기박막으로 된 자극 박막재료와, 상기 혜드의 연축방향에 대해 수직인 자기경로방향을 갖으며 상기의 헤드에 배치시킨 자기회로로 구성시키고, 상기 헤드의 연축방향에서의 자극재료의 길이(w)를 하기와 같이 정의함을 특징으로 하는 박막자기헤드.
    0.2d/w0.3
    여기에서 d는 상기 자극박막내의 180°자구벽 거리이다.
  2. 적어도 1MHZ의 주파수를 기록 및 재생할수 있는 박막자기헤드에 있어서, 축방향 자기 이방성을 갖는 연금속자기박막으로 된 자극박막재료와, 상기 혜드의 연축방향에 대해 수직인 자기경로 방향을 갖으며 상기의 혜드에 배치시킨 자기회로로 구성시키고, 상기 혜드의 연축방향에서의 자극재료의 길이(w)를 하기와 같이 정의함을 특징으로 하는 박막자기헤드.
    d/w0.15
    여기에서 d는 상기 자극박막내의 180° 자구벽거리이다.
  3. 적어도 1MHZ의 주파수를 기록 및 재생할수 있는 박막자기헤드에 있어서, 축방향 자기 이방성을 갖는 연금속자기박막으로 된 자극박막재료와, 상기 헤드의 축방향에 대해 수직인 자기경로 방향을 갖으며 상기 헤드에 배치시킨 자기회로로 구성시키고 상기 헤드의 연축방향에서 자극재료의 길이(w)와, 축이방성정수(Ku)를 하기와 같이 정의함을 특징으로 하는 박막자기헤드.
    50㎛w200㎛
    100J/㎥Ku400J/㎥
  4. 적어도 1MHZ의 주파수를 기록 및 재생할수 있는 박막자기헤드에 있어서, 축방향 자기 이방성을 갖는 연금속자기박막으로 된 자극박막재료와, 상기 헤드의 연축방향에 대해 수직인 자기경로방향을 갖으며 상기 헤드에 배치시킨 자기회로로 구성시키고, 상기 헤드의 연축방향에서의 자극재료의 길이(w)와, 축이방성정수(Ku)를 하기와 같이 정의함을 특징으로 하는 박막자기헤드.
    700㎛w
    Ku300J/㎥
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019880014153A 1987-10-29 1988-10-29 박막 자기헤드. KR930001144B1 (ko)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP271823 1987-10-29
JP62-271823 1987-10-29
JP27182387A JPH0760494B2 (ja) 1987-10-29 1987-10-29 薄膜磁気ヘッド
JP27936087A JP2520670B2 (ja) 1987-11-06 1987-11-06 薄膜磁気ヘッド
JP279360 1987-11-06
JP62-279360 1987-11-06

Publications (2)

Publication Number Publication Date
KR890007218A true KR890007218A (ko) 1989-06-19
KR930001144B1 KR930001144B1 (ko) 1993-02-19

Family

ID=26549904

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880014153A KR930001144B1 (ko) 1987-10-29 1988-10-29 박막 자기헤드.

Country Status (4)

Country Link
US (1) US5027247A (ko)
EP (1) EP0314172B1 (ko)
KR (1) KR930001144B1 (ko)
DE (1) DE3888287T2 (ko)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5311386A (en) * 1989-06-02 1994-05-10 Digital Equipment Corporation Transducer with improved inductive coupling
US5184267A (en) * 1989-06-02 1993-02-02 Digital Equipment Corporation Transducer with improved inductive coupling
US5195005A (en) * 1989-06-02 1993-03-16 Digital Equipment Corporation Tranducer with improved inductive coupling
US5428893A (en) * 1989-06-02 1995-07-04 Quantum Corporation Method of making a transducer with improved inductive coupling
KR930010862A (ko) * 1991-11-12 1993-06-23 씨릴 제이. 얀순이 좁은 요크(yoke)를 갖는 박막자기헤드
JP2955829B2 (ja) * 1994-04-15 1999-10-04 ハッチンソン テクノロジー インコーポレイテッド ヘッドサスペンション
US6195232B1 (en) * 1995-08-24 2001-02-27 Torohead, Inc. Low-noise toroidal thin film head with solenoidal coil
US7296339B1 (en) 2004-09-08 2007-11-20 Western Digital (Fremont), Llc Method for manufacturing a perpendicular magnetic recording head
US7552523B1 (en) 2005-07-01 2009-06-30 Western Digital (Fremont), Llc Method for manufacturing a perpendicular magnetic recording transducer
US8333008B1 (en) 2005-07-29 2012-12-18 Western Digital (Fremont), Llc Method for manufacturing a perpendicular magnetic recording transducer
US7508627B1 (en) 2006-03-03 2009-03-24 Western Digital (Fremont), Llc Method and system for providing perpendicular magnetic recording transducers
US8141235B1 (en) 2006-06-09 2012-03-27 Western Digital (Fremont), Llc Method for manufacturing a perpendicular magnetic recording transducers
US8015692B1 (en) 2007-11-07 2011-09-13 Western Digital (Fremont), Llc Method for providing a perpendicular magnetic recording (PMR) head
US20090244787A1 (en) * 2008-03-31 2009-10-01 Alan Paul Giorgi Perpendicular head with wide track writing capability and methods of media testing
US9099118B1 (en) 2009-05-26 2015-08-04 Western Digital (Fremont), Llc Dual damascene process for producing a PMR write pole
US8486285B2 (en) 2009-08-20 2013-07-16 Western Digital (Fremont), Llc Damascene write poles produced via full film plating

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4103315A (en) * 1977-06-24 1978-07-25 International Business Machines Corporation Antiferromagnetic-ferromagnetic exchange bias films
JPS55125519A (en) * 1979-03-23 1980-09-27 Hitachi Ltd Magnetic head
JPS56101617A (en) * 1980-01-18 1981-08-14 Olympus Optical Co Ltd Multichannel magnetic head and its manufacture
FR2489570A1 (fr) * 1980-08-27 1982-03-05 Cii Honeywell Bull Transducteur magnetique integre
JPS5755522A (en) * 1980-09-22 1982-04-02 Hitachi Ltd Magnetic head
JPS5891517A (ja) * 1981-11-27 1983-05-31 Hitachi Ltd 磁気記録再生装置
NL8200481A (nl) * 1982-02-09 1983-09-01 Philips Nv Magneetkop.
US4695351A (en) * 1986-07-10 1987-09-22 Digital Equipment Corporation Method for producing magnetic heads

Also Published As

Publication number Publication date
DE3888287D1 (de) 1994-04-14
KR930001144B1 (ko) 1993-02-19
EP0314172B1 (en) 1994-03-09
EP0314172A2 (en) 1989-05-03
EP0314172A3 (en) 1990-11-14
DE3888287T2 (de) 1994-06-09
US5027247A (en) 1991-06-25

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