JPS57138021A - Thin film magnetic head - Google Patents

Thin film magnetic head

Info

Publication number
JPS57138021A
JPS57138021A JP2300681A JP2300681A JPS57138021A JP S57138021 A JPS57138021 A JP S57138021A JP 2300681 A JP2300681 A JP 2300681A JP 2300681 A JP2300681 A JP 2300681A JP S57138021 A JPS57138021 A JP S57138021A
Authority
JP
Japan
Prior art keywords
groove
thin film
core
sputtered
gap
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
JP2300681A
Other languages
Japanese (ja)
Inventor
Katsuo Konishi
Kanji Kawano
Mitsuharu Tamura
Mitsuo Abe
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2300681A priority Critical patent/JPS57138021A/en
Priority to US06/349,529 priority patent/US4476509A/en
Priority to FR8202810A priority patent/FR2500672B1/en
Priority to DE3206058A priority patent/DE3206058C2/en
Publication of JPS57138021A publication Critical patent/JPS57138021A/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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/23—Gap features
    • 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
    • G11B5/3116—Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks

Landscapes

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

Abstract

PURPOSE:To cope with a track width over board range, by providing a V-shaped groove reaching a base surface at a part of a magnetic thin film, forming a thin nonmagnetic film at least on one wall of this groove, and imbedding a magnetic thin film on the groove. CONSTITUTION:A core 2a is laminated with a sendust thin film into two layers by 10mu each with sputtering, and SiO2 is sputtered between the layers as an insulation material. The groove of a core 2b is cut with an angle of 60 deg., and SiO2, 0.5mu in the thickness being requested gap length is sputtered to the cut groove, further sendust, 20mu thick is sputtered as groove imbedding, and unnecessary film laminated on the core 2a is polished and removed until the core 2a appears. Since the gap of the gap section 3b is as small as 0.2mu in comparison with the gap section 3a, 0.5mu thick, the recording/reproducing ability with the gap section 3b is inferior to that of the 3a preferably.
JP2300681A 1981-02-20 1981-02-20 Thin film magnetic head Pending JPS57138021A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2300681A JPS57138021A (en) 1981-02-20 1981-02-20 Thin film magnetic head
US06/349,529 US4476509A (en) 1981-02-20 1982-02-17 Thin film magnetic head and method of manufacturing the same
FR8202810A FR2500672B1 (en) 1981-02-20 1982-02-19 MAGNETIC THIN FILM HEAD AND MANUFACTURING METHOD THEREOF
DE3206058A DE3206058C2 (en) 1981-02-20 1982-02-19 Thin film magnetic head and method for its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2300681A JPS57138021A (en) 1981-02-20 1981-02-20 Thin film magnetic head

Publications (1)

Publication Number Publication Date
JPS57138021A true JPS57138021A (en) 1982-08-26

Family

ID=12098404

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2300681A Pending JPS57138021A (en) 1981-02-20 1981-02-20 Thin film magnetic head

Country Status (1)

Country Link
JP (1) JPS57138021A (en)

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