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JPS57203218A - Thin film magnetic head - Google Patents

Thin film magnetic head

Info

Publication number
JPS57203218A
JPS57203218A JP8814381A JP8814381A JPS57203218A JP S57203218 A JPS57203218 A JP S57203218A JP 8814381 A JP8814381 A JP 8814381A JP 8814381 A JP8814381 A JP 8814381A JP S57203218 A JPS57203218 A JP S57203218A
Authority
JP
Japan
Prior art keywords
magnetic
air gap
film
thickness
magnetic head
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.)
Granted
Application number
JP8814381A
Other languages
Japanese (ja)
Other versions
JPH0115928B2 (en
Inventor
Masaki Oura
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 JP8814381A priority Critical patent/JPS57203218A/en
Publication of JPS57203218A publication Critical patent/JPS57203218A/en
Publication of JPH0115928B2 publication Critical patent/JPH0115928B2/ja
Granted 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

Landscapes

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

Abstract

PURPOSE: To perform high density magnetic recording reproduction with high fidelity, by disposing a conductor layer not connected to an external circuit between opposing magnetic substance films of a thin magnetic head and preventing the reduction in magnetic reluctance at an air gap and the increase in leakage magnetic flux between both magnetic pole pieces.
CONSTITUTION: An insulating film 12 made of Al2O3 is formed on a photoceram base 10, and a lower magnetic substance film 12 is formed by sputtering "Permalloy " with 2μ thickness. A conductor layer 13 to increase the magnetic reluctance of air gap is vapor-deposited with 0.8μ thickness with Cu or the like to constitute a front air gap 14. Next, an insulation film 16 is formed with Al2O3 and a coil conductor 17(Ti) is formed, and after forming an Al2O3 film 13 on the conductor 17(Ti), an upper "Permalloy " 19 is formed with 2μ thickness. A magnetic substance 19 is connected to the lower magnetic substance 12 with a rear edge 15. Thus, the air gap 14 to a magnetic recording medium 20 is less in the reduction of magnetic reluctance in comparison that constituted with an insulation film conventionally, and the resolution of the magnetic head can be increased greatly.
COPYRIGHT: (C)1982,JPO&Japio
JP8814381A 1981-06-10 1981-06-10 Thin film magnetic head Granted JPS57203218A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8814381A JPS57203218A (en) 1981-06-10 1981-06-10 Thin film magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8814381A JPS57203218A (en) 1981-06-10 1981-06-10 Thin film magnetic head

Publications (2)

Publication Number Publication Date
JPS57203218A true JPS57203218A (en) 1982-12-13
JPH0115928B2 JPH0115928B2 (en) 1989-03-22

Family

ID=13934706

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8814381A Granted JPS57203218A (en) 1981-06-10 1981-06-10 Thin film magnetic head

Country Status (1)

Country Link
JP (1) JPS57203218A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62140217A (en) * 1985-12-14 1987-06-23 Sony Corp Thin film magnetic head
EP0868717A1 (en) * 1995-12-18 1998-10-07 Quantum Corporation Low-inductance thin-film head
US7538977B2 (en) 2004-04-30 2009-05-26 Hitachi Global Storage Technologies B.V. Method and apparatus for providing diamagnetic flux focusing in a storage device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5233714A (en) * 1975-09-10 1977-03-15 Hitachi Ltd Thin film magnetic head

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5233714A (en) * 1975-09-10 1977-03-15 Hitachi Ltd Thin film magnetic head

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62140217A (en) * 1985-12-14 1987-06-23 Sony Corp Thin film magnetic head
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
US7538977B2 (en) 2004-04-30 2009-05-26 Hitachi Global Storage Technologies B.V. Method and apparatus for providing diamagnetic flux focusing in a storage device

Also Published As

Publication number Publication date
JPH0115928B2 (en) 1989-03-22

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