JPS56165923A - Magnetic head - Google Patents

Magnetic head

Info

Publication number
JPS56165923A
JPS56165923A JP6945180A JP6945180A JPS56165923A JP S56165923 A JPS56165923 A JP S56165923A JP 6945180 A JP6945180 A JP 6945180A JP 6945180 A JP6945180 A JP 6945180A JP S56165923 A JPS56165923 A JP S56165923A
Authority
JP
Japan
Prior art keywords
thin films
magnetic
type
magnetic flux
flux
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP6945180A
Other languages
Japanese (ja)
Inventor
Kidai Nochi
Kenji Kanai
Nobumasa Kaminaka
Noboru Nomura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP6945180A priority Critical patent/JPS56165923A/en
Publication of JPS56165923A publication Critical patent/JPS56165923A/en
Pending legal-status Critical Current

Links

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
    • G11B5/33—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

Abstract

PURPOSE:To prevent the demagnetization phenomenon of the signal magnetism in a magnetic recording medium by magnetizing hard magnetic thin films in such a manner that the magentic flux from a bias magnetic flux generating member passing soft magnetic thin films and the magnetic flux of the opposite direction are flowed through the soft magnetic thin films. CONSTITUTION:Soft magnetic thin films 22, 72 are soft magnetic thin films of a short rectangular strip type which consist of ferrite, etc. and are provided with shield functions. Hard magnetic thin films 23, 73 consist of oxides such as Fe-O type, and Fe-CO type, metals or alloys such as Co, Co-Ni-P type, etc. The magnetic flux leaking from a magnet or electromagnet 9 provided in order to apply bias magnetic fields to a magnetoresistance effect element film 4 flows to the element film 4, while it also flows to the thin films 22, 72, but the thin films 23, 73 are so magnetized that the direction of the magnetic flux thereof is made opposite from the magnetic flux of the magnet or electromagnet 9 past the thin films 22, 72, whereby the magnetic fluxes in the thin films 22, 72 are offset.
JP6945180A 1980-05-24 1980-05-24 Magnetic head Pending JPS56165923A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6945180A JPS56165923A (en) 1980-05-24 1980-05-24 Magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6945180A JPS56165923A (en) 1980-05-24 1980-05-24 Magnetic head

Publications (1)

Publication Number Publication Date
JPS56165923A true JPS56165923A (en) 1981-12-19

Family

ID=13403011

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6945180A Pending JPS56165923A (en) 1980-05-24 1980-05-24 Magnetic head

Country Status (1)

Country Link
JP (1) JPS56165923A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59223923A (en) * 1983-06-01 1984-12-15 Hitachi Ltd Magneto-resistance effect type playback head
EP0204902A2 (en) * 1985-03-20 1986-12-17 Sony Corporation Yoke type magnetic transducer head utilizing a magnetoresistance effect
EP0325365A2 (en) * 1988-01-19 1989-07-26 Hewlett-Packard Company Compensated magneto-resistive read head
EP0669609A2 (en) * 1994-02-28 1995-08-30 Commissariat A L'energie Atomique Magnetic read head with magnetoresistive element and improved biasing means
EP0768642A2 (en) * 1995-10-13 1997-04-16 Read-Rite Corporation Magnetic head with biased GMR element and sense current compensation

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59223923A (en) * 1983-06-01 1984-12-15 Hitachi Ltd Magneto-resistance effect type playback head
JPH0473209B2 (en) * 1983-06-01 1992-11-20 Hitachi Ltd
EP0204902A2 (en) * 1985-03-20 1986-12-17 Sony Corporation Yoke type magnetic transducer head utilizing a magnetoresistance effect
EP0325365A2 (en) * 1988-01-19 1989-07-26 Hewlett-Packard Company Compensated magneto-resistive read head
EP0669609A2 (en) * 1994-02-28 1995-08-30 Commissariat A L'energie Atomique Magnetic read head with magnetoresistive element and improved biasing means
FR2716741A1 (en) * 1994-02-28 1995-09-01 Commissariat Energie Atomique Magnetic reading head with magnetoresistive element and advanced polarization means.
EP0669609A3 (en) * 1994-02-28 1995-10-18 Commissariat Energie Atomique Magnetic read head with magnetoresistive element and improved biasing means.
EP0768642A2 (en) * 1995-10-13 1997-04-16 Read-Rite Corporation Magnetic head with biased GMR element and sense current compensation
EP0768642A3 (en) * 1995-10-13 1998-12-16 Read-Rite Corporation Magnetic head with biased GMR element and sense current compensation

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