JPS57179933A - Magnetoresistance effect type magnetic head and its manufacture - Google Patents

Magnetoresistance effect type magnetic head and its manufacture

Info

Publication number
JPS57179933A
JPS57179933A JP6426681A JP6426681A JPS57179933A JP S57179933 A JPS57179933 A JP S57179933A JP 6426681 A JP6426681 A JP 6426681A JP 6426681 A JP6426681 A JP 6426681A JP S57179933 A JPS57179933 A JP S57179933A
Authority
JP
Japan
Prior art keywords
film
suppressing
demagnetizing field
manufacture
magnetic head
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.)
Granted
Application number
JP6426681A
Other languages
Japanese (ja)
Other versions
JPH0256722B2 (en
Inventor
Hiroshi Yoneda
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP6426681A priority Critical patent/JPS57179933A/en
Publication of JPS57179933A publication Critical patent/JPS57179933A/en
Publication of JPH0256722B2 publication Critical patent/JPH0256722B2/ja
Granted 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
    • G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
    • G11B5/3929—Disposition of magnetic thin films not used for directly coupling magnetic flux from the track to the MR film or for shielding
    • G11B5/3935—Flux closure films not being part of the track flux guides
    • G11B5/3938—Flux closure films not being part of the track flux guides the flux closure films being used for absorbing or reducing demagnetisating or saturating fields

Landscapes

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

Abstract

PURPOSE:To completely suppress a demagnetizing field and to minimize the dead band of an MR element, by using a high electric resistance material for a demagnetizing field suppression magnetic substance film, directly connecting the MR element and the demagnetization suppressing film and minimizing an overlapped part of the two. CONSTITUTION:As a demagnetization field suppressing magnetic substance film (hereinafter suppressing film), NiZn ferrite is used, the upper ridge of an MR element 2 is direct contact with a lower end 8a of a suppressing film 8 with overlapping. The film 8 can be regarded as an insulation material. The thickness of the MR element is 0.05mum and the thickness of the film 8 is 0.15-1.0mum. Thus, the MR element is contact with the film 8, then the suppression of the demagnetizing field can completely be made. Since the width of overlapped part of both the films can be taken as <=1mum, the blind sector of the MR element can be minimized. The MR element is vapor-deposited on a base, a conductor films is vapor-deposited on it, and a pair of the element and film are formed left and right. Unnecessary parts of the MR element are removed by etching.
JP6426681A 1981-04-30 1981-04-30 Magnetoresistance effect type magnetic head and its manufacture Granted JPS57179933A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6426681A JPS57179933A (en) 1981-04-30 1981-04-30 Magnetoresistance effect type magnetic head and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6426681A JPS57179933A (en) 1981-04-30 1981-04-30 Magnetoresistance effect type magnetic head and its manufacture

Publications (2)

Publication Number Publication Date
JPS57179933A true JPS57179933A (en) 1982-11-05
JPH0256722B2 JPH0256722B2 (en) 1990-12-03

Family

ID=13253225

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6426681A Granted JPS57179933A (en) 1981-04-30 1981-04-30 Magnetoresistance effect type magnetic head and its manufacture

Country Status (1)

Country Link
JP (1) JPS57179933A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56111125A (en) * 1980-02-06 1981-09-02 Hitachi Ltd Magnetic resistance head

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56111125A (en) * 1980-02-06 1981-09-02 Hitachi Ltd Magnetic resistance head

Also Published As

Publication number Publication date
JPH0256722B2 (en) 1990-12-03

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