KR960015406A - 자기헤드 - Google Patents

자기헤드 Download PDF

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Publication number
KR960015406A
KR960015406A KR1019940016692A KR19940016692A KR960015406A KR 960015406 A KR960015406 A KR 960015406A KR 1019940016692 A KR1019940016692 A KR 1019940016692A KR 19940016692 A KR19940016692 A KR 19940016692A KR 960015406 A KR960015406 A KR 960015406A
Authority
KR
South Korea
Prior art keywords
thin film
magnetic
core
film magnetic
shield
Prior art date
Application number
KR1019940016692A
Other languages
English (en)
Inventor
무네가쓰 후꾸야마
야스오 사사끼
유다까 소다
고지 후꾸모도
데쓰오 세끼야
Original Assignee
오가 노리오
소니 가부시기가이샤
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 오가 노리오, 소니 가부시기가이샤 filed Critical 오가 노리오
Publication of KR960015406A publication Critical patent/KR960015406A/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
    • G11B5/147—Structure or manufacture of heads, e.g. inductive with cores being composed of metal sheets, i.e. laminated cores with cores composed of isolated magnetic layers, e.g. sheets
    • 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
    • G11B5/3967—Composite structural arrangements of transducers, e.g. inductive write and magnetoresistive read
    • 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
    • G11B5/465—Arrangements for demagnetisation of heads
    • 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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • 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
    • G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
    • 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
    • G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
    • G11B5/3912—Arrangements in which the active read-out elements are transducing in association with active magnetic shields, e.g. magnetically coupled shields

Abstract

본 발명에 관한 박막자기헤드에 있어서는, 기판상에 적층된 한쪽의 박막자기 코어를 2매의 자성막과 그 중간에 협지된 비자성막으로 구성하고, 박막자기코어의 자화곤란축방향으로 전류를 흐르도록 한다.
또, 본 발명에 관한 자기저항효과형 자기헤드는 자기저항효과소자를 협지한 한쌍의 실드코어의 한쪽을 2매의 자성막과 그 중간에 협지된 비자성막에 의해 구성하고, 자기저항효과소자와 한쪽의 실드코어와를 전기적으로 접속하여 센스전류를 한쪽의 실드코어에도 흐르도록 한다.
여기서, 자기저항효과소자를 통해 한쪽의 실드코어에 흐르게 하는 전류로서는, 직류의 센스전류와 함께, 한쪽의 실드코어를 소자(消磁)하기 위한 점차 진폭이 감쇠되는 교류전류를 흐르게 하는 것이 바람직하다. 또, 이 전류의 향은 한쪽의 실드코어의 자화곤란축방향으로 하고, 자화용이축방향에 발생하는 자계에의해 이 실드코어의 자기특성을 안정화(소자)하는 것이 바람직하다.
또, 본 발명에 관한 MR 인덕티브헤드에 있어서는, 동일 기판상에 형성된 MR헤드와 인덕티브헤드의 공통자성체인 제2의 박막자기코어를 2매의 자성막과 그 중간에 협지된 비자성막에 의해 구성하고, 이 제2의 박막자기코어의 자화곤란축방향으로 전류를 흐르도록 한다.
본 발명은 박막자기코어 및 실드코어의 자구(磁區)구조를 안정화(소자)하여, 헤드출력의 향상을 도모할 수 있고, 또한 구성도 비교적 간단히 완료되는 박막자기헤드 및 자기저항효과형 자기헤드 및 MR 인덕티브헤드를 제공한다.

Description

자기헤드
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제3도는 실시예 1의 박막자기헤드의 요부확대단면도,
제6도는 실시예2의 MR 헤드의 개략구성을 나타낸 사시도.

Claims (5)

  1. 기판상에 적층된 한쌍의 박막자기코어의 전방단부간에 자기갭이 형성되고, 최소한 한쪽의 박막자기코어는 2매의 자성막과 그 중간에 협지된 비자성막으로 이루어지는 박막자기헤드.
  2. 제1항에 있어서, 박막자기코어의 자화곤란축방향으로 전류를 흐르도록 한 박막자기헤드.
  3. 자기저항효과소자와, 이 자기저항효과소자를 협지하는 한쌍의 실드코어와, 상기 자기저항효과소자와 상기 한쌍의 실드코어의 한쪽을 전기적으로 접속하는 비자성도체를 가지고, 상기 한쪽의 실드코어는 2매의 자성막과 그 중간에 협지된 비자성막으로 이루어지는 자기저항효과형 자기헤드.
  4. 제3항에 있어서, 상기 자기저항효과소자를 통해 상기 한쪽의 실드코어의 자화곤란축방향으로 전류를 흐르게 하는 구조로 한 자기저항효과형 자기헤드.
  5. 제1의 박막자기코어와 제2의 박막자기코어간에 자기저항효과소자가 배설되고, 자기기록매체와의 대접면(對接面)에 면하여 재생용 자기갭을 구성하여 이루어지는 자기저향항효과형 자기헤드와, 상기 제2의 박막자기코어에 의해 폐자로(閉磁路)를 구성하는 제3의 박막자기코어가 이 제2의 박막자기코어상에 적층되고, 이들 박막자기코어의 전방단부간에 자기기록매체와의 대접면에 면하여 기록용 자기갭을 구성하는 유도형 박막자기헤드가 동일 기판상에 적층되고, 상기 제2의 박막자기코어는 2매의 자성막과 그 중간에 협지된 비자성막으로 이루어지고, 이 제2의 박막자기코어의 자화곤란축방향으로 전류를 흐르도록 한 복합형 자기헤드.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940016692A 1993-07-14 1994-07-12 자기헤드 KR960015406A (ko)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP17401493 1993-07-14
JP93-174,014 1993-07-14
JP5213963A JPH0778309A (ja) 1993-07-14 1993-08-30 薄膜磁気ヘッド及び磁気抵抗効果型磁気ヘッド並びに複合型磁気ヘッド
JP93-213,963 1993-08-30

Publications (1)

Publication Number Publication Date
KR960015406A true KR960015406A (ko) 1996-05-22

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ID=26495772

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940016692A KR960015406A (ko) 1993-07-14 1994-07-12 자기헤드

Country Status (5)

Country Link
US (2) US5822159A (ko)
EP (1) EP0634739B1 (ko)
JP (1) JPH0778309A (ko)
KR (1) KR960015406A (ko)
DE (1) DE69426318T2 (ko)

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KR20170076091A (ko) * 2015-12-24 2017-07-04 (주)아모레퍼시픽 살리실산 유도체와 그 제조방법 및 이를 함유하는 미백용 화장료 조성물

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100456974B1 (ko) * 2002-05-10 2004-11-10 주식회사 태평양 신규한 크로만 유도체 및 이의 제조방법, 및 이를함유하는 피부 외용제 조성물
KR20170076091A (ko) * 2015-12-24 2017-07-04 (주)아모레퍼시픽 살리실산 유도체와 그 제조방법 및 이를 함유하는 미백용 화장료 조성물

Also Published As

Publication number Publication date
US5872691A (en) 1999-02-16
EP0634739A3 (en) 1997-06-25
EP0634739A2 (en) 1995-01-18
DE69426318D1 (de) 2000-12-28
JPH0778309A (ja) 1995-03-20
DE69426318T2 (de) 2001-05-17
EP0634739B1 (en) 2000-11-22
US5822159A (en) 1998-10-13

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