JPS57141013A - Thin film magnetic sensor - Google Patents

Thin film magnetic sensor

Info

Publication number
JPS57141013A
JPS57141013A JP56025477A JP2547781A JPS57141013A JP S57141013 A JPS57141013 A JP S57141013A JP 56025477 A JP56025477 A JP 56025477A JP 2547781 A JP2547781 A JP 2547781A JP S57141013 A JPS57141013 A JP S57141013A
Authority
JP
Japan
Prior art keywords
magnetic field
thin film
directions
magnetization
axes
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
JP56025477A
Other languages
Japanese (ja)
Inventor
Takashi Matsumoto
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 Electronics Inc
Original Assignee
Canon Electronics 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 Electronics Inc filed Critical Canon Electronics Inc
Priority to JP56025477A priority Critical patent/JPS57141013A/en
Publication of JPS57141013A publication Critical patent/JPS57141013A/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
    • G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
    • G11B5/3945—Heads comprising more than one sensitive element

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Measuring Magnetic Variables (AREA)
  • Magnetic Heads (AREA)
  • Thin Magnetic Films (AREA)
  • Hall/Mr Elements (AREA)

Abstract

PURPOSE:To reduce the influence due to a temperature change, by arranging thin film element patterns in plural layers so that directions of axes, where magnetization is easy, of ferromagnetic thin film elements intersect on the same plane at about 90 deg.. CONSTITUTION:An MR element 7 for sensing and an MR element 8 for reference are arranged with their directions 9 of axes, where magnetization is easy, and current directions orthogonal to each other, and a signal magnetic field HS is introduced approximately orthogonally to the direction 9 of the element 7, and these elements are laminated through an insulating layer. When the signal magnetic field HS is applied in the direction orthogonal to the MR element 7 and is applied in parallel to the MR element 8, the resistance value of the MR element 7 is changed by the intensity of the magnetic field if the value of theta is made constant, and the resistance value of the MR element 8 is constant independently of the intensity of the magnetic field. Thus, a very stable sensor which is not affected by the temperature change due to sliding of a recording medium and the change of the ambient temperature of the substrate is obtained.
JP56025477A 1981-02-25 1981-02-25 Thin film magnetic sensor Pending JPS57141013A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56025477A JPS57141013A (en) 1981-02-25 1981-02-25 Thin film magnetic sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56025477A JPS57141013A (en) 1981-02-25 1981-02-25 Thin film magnetic sensor

Publications (1)

Publication Number Publication Date
JPS57141013A true JPS57141013A (en) 1982-09-01

Family

ID=12167120

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56025477A Pending JPS57141013A (en) 1981-02-25 1981-02-25 Thin film magnetic sensor

Country Status (1)

Country Link
JP (1) JPS57141013A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02176484A (en) * 1988-12-28 1990-07-09 Asahi Chem Ind Co Ltd Ferromagnetic magnetoresistance element
US5085935A (en) * 1988-08-03 1992-02-04 Digital Equipment Corporation Flux spreading thin film magnetic devices
US5089334A (en) * 1988-08-03 1992-02-18 Digital Equipment Corporation Flux spreading thin film magnetic devices
US5159511A (en) * 1987-04-01 1992-10-27 Digital Equipment Corporation Biasing conductor for MR head
US5384680A (en) * 1988-08-03 1995-01-24 Digital Equipment Corporation Perpendicular anisotropy in thin film devices

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5159511A (en) * 1987-04-01 1992-10-27 Digital Equipment Corporation Biasing conductor for MR head
US5085935A (en) * 1988-08-03 1992-02-04 Digital Equipment Corporation Flux spreading thin film magnetic devices
US5089334A (en) * 1988-08-03 1992-02-18 Digital Equipment Corporation Flux spreading thin film magnetic devices
US5384680A (en) * 1988-08-03 1995-01-24 Digital Equipment Corporation Perpendicular anisotropy in thin film devices
JPH02176484A (en) * 1988-12-28 1990-07-09 Asahi Chem Ind Co Ltd Ferromagnetic magnetoresistance element

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