JPS5522276A - Thin-film magnetic head - Google Patents

Thin-film magnetic head

Info

Publication number
JPS5522276A
JPS5522276A JP9510678A JP9510678A JPS5522276A JP S5522276 A JPS5522276 A JP S5522276A JP 9510678 A JP9510678 A JP 9510678A JP 9510678 A JP9510678 A JP 9510678A JP S5522276 A JPS5522276 A JP S5522276A
Authority
JP
Japan
Prior art keywords
gap
magnetic
thin films
magnetic substance
films
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
JP9510678A
Other languages
Japanese (ja)
Inventor
Yoshimasa Miura
Hitoshi Takagi
Junzo Toda
Seiji Yoneoka
Susumu Kawakami
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP9510678A priority Critical patent/JPS5522276A/en
Publication of JPS5522276A publication Critical patent/JPS5522276A/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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • G11B5/313—Disposition of layers
    • G11B5/3143—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding
    • G11B5/3146—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic layers
    • G11B5/3153—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic layers including at least one magnetic thin film coupled by interfacing to the basic magnetic thin film structure

Landscapes

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

Abstract

PURPOSE:To eliminate occurrence of the edge noise which gives the evil effect to the record/reproduction frequency characteristics and the peak shift of the pattern interference by forming the magnetic circuit end facing to the gap part with the specified several layers of the magnetic substance thin film. CONSTITUTION:Magnetic substance thin films 201-204 at one end of the magnetic circuit detouring along the gap plus magnetic substance thin films 211-214 of the other end are composed of several different materials in order to give larger saturation magnetization and the permeability to the thin films closer to the gap. Therefore, the absolute value of magnetic scalar potential phi near the thin film magnetic head decrease slowly at the edge part excepting the gap. As a result, the edge noise caused by a sudden change of potential phi never occurs, and thus a high-perfomance head featuring a small amount of the peak shift as in case the pole face length is increased. In this case, the thickness of films 201-214 can be set to an order early identical to gap length 2g.
JP9510678A 1978-08-04 1978-08-04 Thin-film magnetic head Pending JPS5522276A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9510678A JPS5522276A (en) 1978-08-04 1978-08-04 Thin-film magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9510678A JPS5522276A (en) 1978-08-04 1978-08-04 Thin-film magnetic head

Publications (1)

Publication Number Publication Date
JPS5522276A true JPS5522276A (en) 1980-02-16

Family

ID=14128608

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9510678A Pending JPS5522276A (en) 1978-08-04 1978-08-04 Thin-film magnetic head

Country Status (1)

Country Link
JP (1) JPS5522276A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4742413A (en) * 1985-12-20 1988-05-03 Siemens Akteingesellschaft Magnetic memory including a recording device and medium that can be magnetized vertically
JPH03286410A (en) * 1990-04-03 1991-12-17 Alps Electric Co Ltd Thin-film magnetic head
JPH0845019A (en) * 1994-07-29 1996-02-16 Nec Corp Thin film magnetic head

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4742413A (en) * 1985-12-20 1988-05-03 Siemens Akteingesellschaft Magnetic memory including a recording device and medium that can be magnetized vertically
JPH03286410A (en) * 1990-04-03 1991-12-17 Alps Electric Co Ltd Thin-film magnetic head
JPH0845019A (en) * 1994-07-29 1996-02-16 Nec Corp Thin film magnetic head

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