JPS56156914A - Thin-film magnetic head - Google Patents

Thin-film magnetic head

Info

Publication number
JPS56156914A
JPS56156914A JP5786580A JP5786580A JPS56156914A JP S56156914 A JPS56156914 A JP S56156914A JP 5786580 A JP5786580 A JP 5786580A JP 5786580 A JP5786580 A JP 5786580A JP S56156914 A JPS56156914 A JP S56156914A
Authority
JP
Japan
Prior art keywords
film
insulator
alloy
layer
magnetic flux
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
JP5786580A
Other languages
Japanese (ja)
Inventor
Shinji Narushige
Mitsuo Sato
Tsuneo Yoshinari
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 JP5786580A priority Critical patent/JPS56156914A/en
Publication of JPS56156914A publication Critical patent/JPS56156914A/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
    • G11B5/3133—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure

Landscapes

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

Abstract

PURPOSE:To reduce the leakage magnetic flux and the writing current and increase the reading voltage, by providing an electrically conductive and nonmagnetic member which produces an eddy current by the leakage magnetic flux caused between an upper and lower magnetic substances of a plane multipattern thin-film magnetic head. CONSTITUTION:A lower magnetic substance 11 is formed on a substrate 15, and an insulator 17a is formed with an SiO2 film. At the same time, a conductor film 13 which functions as a coil is formed with Al or the like. Then an insulator 17b is formed with an SiO2 film. After this, a nonmagnetic metallic film 16 for magnetic flux leakage reducing is formed by the material selected among the Al, Al alloy, Cu, Cu alloy, Au and Au alloy. An insulator 17c is formed on the film 16, and an upper magnetic layer 12 is formed finally. Not only an SiO2 film but other oxides such as Al2O3 or the fluorides can be used for the insulated layers 17a-17c, and the metals or alloys other than Al can be used for the conductor film 13. The layer 16 is not necessarily a consecutive layer.
JP5786580A 1980-05-02 1980-05-02 Thin-film magnetic head Pending JPS56156914A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5786580A JPS56156914A (en) 1980-05-02 1980-05-02 Thin-film magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5786580A JPS56156914A (en) 1980-05-02 1980-05-02 Thin-film magnetic head

Publications (1)

Publication Number Publication Date
JPS56156914A true JPS56156914A (en) 1981-12-03

Family

ID=13067879

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5786580A Pending JPS56156914A (en) 1980-05-02 1980-05-02 Thin-film magnetic head

Country Status (1)

Country Link
JP (1) JPS56156914A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57127911A (en) * 1981-01-27 1982-08-09 Nec Corp Thin film magnetic head
JPS57127912A (en) * 1981-01-27 1982-08-09 Nec Corp Thin film magnetic head
US4907115A (en) * 1987-07-15 1990-03-06 U.S. Philips Corp. Super conducting thin-film magnetic head including a magnetoresistive element
EP0868717A1 (en) * 1995-12-18 1998-10-07 Quantum Corporation Low-inductance thin-film head
US6031696A (en) * 1997-06-20 2000-02-29 Tdk Corporation Thin-film magnetic head having conductive material contacting sides of the upper pole layer and an upper surface of the lower pole layer
US6469868B2 (en) * 1998-09-10 2002-10-22 Tdk Corporation Thin film magnetic head having a nonmagnetic conductive layer and method of manufacturing same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57127911A (en) * 1981-01-27 1982-08-09 Nec Corp Thin film magnetic head
JPS57127912A (en) * 1981-01-27 1982-08-09 Nec Corp Thin film magnetic head
US4907115A (en) * 1987-07-15 1990-03-06 U.S. Philips Corp. Super conducting thin-film magnetic head including a magnetoresistive element
EP0868717A1 (en) * 1995-12-18 1998-10-07 Quantum Corporation Low-inductance thin-film head
EP0868717A4 (en) * 1995-12-18 1998-12-02 Quantum Corp Low-inductance thin-film head
US6031696A (en) * 1997-06-20 2000-02-29 Tdk Corporation Thin-film magnetic head having conductive material contacting sides of the upper pole layer and an upper surface of the lower pole layer
US6469868B2 (en) * 1998-09-10 2002-10-22 Tdk Corporation Thin film magnetic head having a nonmagnetic conductive layer and method of manufacturing same

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