JPS56114121A - Magnetic head - Google Patents

Magnetic head

Info

Publication number
JPS56114121A
JPS56114121A JP1625080A JP1625080A JPS56114121A JP S56114121 A JPS56114121 A JP S56114121A JP 1625080 A JP1625080 A JP 1625080A JP 1625080 A JP1625080 A JP 1625080A JP S56114121 A JPS56114121 A JP S56114121A
Authority
JP
Japan
Prior art keywords
thin film
film
substance
magnetic
hard magnetic
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
JP1625080A
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 JP1625080A priority Critical patent/JPS56114121A/en
Publication of JPS56114121A publication Critical patent/JPS56114121A/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

Landscapes

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

Abstract

PURPOSE:To reduce magnetic dispersion of the MR element, by arranging the second hard magnetic substance, which has the polarity in the thickness direction of the magnetoresistance effect element film (MR element film), above the first ferromagnetic substance. CONSTITUTION:The thin film group consisting of nonmagnetic insulating thin film 2, the first hard magnetic substance 3, nonmagnetic insulating thin film 4, strip-form MR element film 5, conductive thin film 6, and nonmagnetic insulating thin film 7 is arranged on the first ferromagnetic substance 1, and the protection substrate at the second ferromagnetic substance 8 is arrange on this thin film group through the adhesive layer. Further, the second hard magnetic substance 91 and 93 having the polarity in the thickness direction of MR element film 5 are arranged on both side parts 11 and 12 of the first ferromagnetic substance 1. This second hard magnetic substance consists of Ba ferrite, Mn-Al-C, Co-Cr, and so on and is constituted with the film which has the easy axis in the direction vertical to the face, and a part of the magnetism generated by it is applied in the longitudinal direction which is the magnetic easy axis direction of MR element film 5. Consequently, magnetic dispersion of the MR element is reduced, and the magnetic bias is adjusted with a high precision.
JP1625080A 1980-02-12 1980-02-12 Magnetic head Pending JPS56114121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1625080A JPS56114121A (en) 1980-02-12 1980-02-12 Magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1625080A JPS56114121A (en) 1980-02-12 1980-02-12 Magnetic head

Publications (1)

Publication Number Publication Date
JPS56114121A true JPS56114121A (en) 1981-09-08

Family

ID=11911309

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1625080A Pending JPS56114121A (en) 1980-02-12 1980-02-12 Magnetic head

Country Status (1)

Country Link
JP (1) JPS56114121A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4547824A (en) * 1982-12-17 1985-10-15 International Business Machines Corporation Dual biasing for integrated inductive MR head
US4639806A (en) * 1983-09-09 1987-01-27 Sharp Kabushiki Kaisha Thin film magnetic head having a magnetized ferromagnetic film on the MR element
JPS63152573U (en) * 1987-03-26 1988-10-06

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4547824A (en) * 1982-12-17 1985-10-15 International Business Machines Corporation Dual biasing for integrated inductive MR head
US4639806A (en) * 1983-09-09 1987-01-27 Sharp Kabushiki Kaisha Thin film magnetic head having a magnetized ferromagnetic film on the MR element
JPS63152573U (en) * 1987-03-26 1988-10-06

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