JPS57203221A - Thin film magnetic head - Google Patents

Thin film magnetic head

Info

Publication number
JPS57203221A
JPS57203221A JP8844381A JP8844381A JPS57203221A JP S57203221 A JPS57203221 A JP S57203221A JP 8844381 A JP8844381 A JP 8844381A JP 8844381 A JP8844381 A JP 8844381A JP S57203221 A JPS57203221 A JP S57203221A
Authority
JP
Japan
Prior art keywords
magnetic head
layer
magnetic substance
magnetic
hardness
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
JP8844381A
Other languages
Japanese (ja)
Inventor
Mitsumasa Umezaki
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8844381A priority Critical patent/JPS57203221A/en
Publication of JPS57203221A publication Critical patent/JPS57203221A/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
    • 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

Abstract

PURPOSE:To prevent the change in a gap length, by using a material with less water deformation for one of upper and lower magnetic substance layers constituting a core of a magnetic head, using a material possible for control with good accuracy for track width for another and running a medium froem a layer with less wear deformation to another layer. CONSTITUTION:On upper and lower cores of a thin film magnetic head, e.g., a substrate 8, a lower magnetic substance layer 4 is formed by using a ''Supersendust '' having larger specific permeability, saturated magnetic flux density and hardness (>=500 in Vickers hardness). On the other hand, an upper magnetic substance layer 5 is formed with the width equal to a track width TW by using ''Dermalloy ''-plated film having large specific permeability and saturated magnetic flux density, with ease of processing for accurate core shape, not taking the hardness into account. Thus, with narrow interval Dh between a recording medium 10 and a magnetic head, the reduction in the recording and reproducing efficiency can be prevented by preventing that the magnetic substance caused with wear of the recording medium 10 slid toward the arrow 11 covers upper and lower insulating layers 9c and 9d of the gap so that the gap length Lg is narrowed.
JP8844381A 1981-06-09 1981-06-09 Thin film magnetic head Pending JPS57203221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8844381A JPS57203221A (en) 1981-06-09 1981-06-09 Thin film magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8844381A JPS57203221A (en) 1981-06-09 1981-06-09 Thin film magnetic head

Publications (1)

Publication Number Publication Date
JPS57203221A true JPS57203221A (en) 1982-12-13

Family

ID=13942941

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8844381A Pending JPS57203221A (en) 1981-06-09 1981-06-09 Thin film magnetic head

Country Status (1)

Country Link
JP (1) JPS57203221A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6198208U (en) * 1984-11-29 1986-06-24
FR2716996A1 (en) * 1994-03-07 1995-09-08 Commissariat Energie Atomique Vertical magnetic head and its production method.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6198208U (en) * 1984-11-29 1986-06-24
FR2716996A1 (en) * 1994-03-07 1995-09-08 Commissariat Energie Atomique Vertical magnetic head and its production method.
EP0671724A1 (en) * 1994-03-07 1995-09-13 Commissariat A L'energie Atomique Vertical magnetic head and manufacturing process

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