JPS57203219A - Thin film magnetic head - Google Patents

Thin film magnetic head

Info

Publication number
JPS57203219A
JPS57203219A JP8817981A JP8817981A JPS57203219A JP S57203219 A JPS57203219 A JP S57203219A JP 8817981 A JP8817981 A JP 8817981A JP 8817981 A JP8817981 A JP 8817981A JP S57203219 A JPS57203219 A JP S57203219A
Authority
JP
Japan
Prior art keywords
magnetic substance
thin film
waves
film magnetic
track width
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
JP8817981A
Other languages
Japanese (ja)
Other versions
JPS6353615B2 (en
Inventor
Shinji Narushige
Tsuneo Yoshinari
Mitsuo Sato
Masayuki Takagi
Sadakuni Nagaike
Toshihiro Yoshida
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.)
Computer Basic Technology Research Association Corp
Original Assignee
Computer Basic Technology Research Association 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 Computer Basic Technology Research Association Corp filed Critical Computer Basic Technology Research Association Corp
Priority to JP8817981A priority Critical patent/JPS57203219A/en
Publication of JPS57203219A publication Critical patent/JPS57203219A/en
Publication of JPS6353615B2 publication Critical patent/JPS6353615B2/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

Landscapes

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

Abstract

PURPOSE:To increase the electromagnetic conversion characteristics through the provision of specific waves to a magnetic substance orthogonal to the direction of track width, by using a magnetic substance having a negative magnetostrictive constant for at least one of upper and lower thin film magnetic substance members. CONSTITUTION:A lower thin film magnetic substance 21 is provided on a non- magnetic substance insulating base 24, an insulating body 25 enclosing a thin film conductor coil 23 and forming a gap G is provided, waves are provided on an insulator 25, for example, with a special method and an upper thin film magnetic substance 22 corresponding to the waves are formed. As the magnetic substance 22, an Ni-Fe system material having a negative magnetostrictive constant and including 82.5wt% of Ni is used, the magnetization easy axis 221 of induced uniaxial magnetic anisotropy is made coincident with the track width direction 223 and the direction of wave length 222(27) of the waves is made orthogonal to the track width direction 223 of the medium 28. Thus, the electromagnetic converting characteristics can be improved than the case without waves, the readout voltage is 1.3 times and the recording current is decreased by about 30%.
JP8817981A 1981-06-10 1981-06-10 Thin film magnetic head Granted JPS57203219A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8817981A JPS57203219A (en) 1981-06-10 1981-06-10 Thin film magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8817981A JPS57203219A (en) 1981-06-10 1981-06-10 Thin film magnetic head

Publications (2)

Publication Number Publication Date
JPS57203219A true JPS57203219A (en) 1982-12-13
JPS6353615B2 JPS6353615B2 (en) 1988-10-25

Family

ID=13935673

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8817981A Granted JPS57203219A (en) 1981-06-10 1981-06-10 Thin film magnetic head

Country Status (1)

Country Link
JP (1) JPS57203219A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4663683A (en) * 1982-11-11 1987-05-05 Matsushita Electric Industrial Co., Ltd. Magnetoresistive thin film head
US4750072A (en) * 1985-02-20 1988-06-07 Hitachi, Ltd. Thin-film magnetic head provided with a magnetic film having regions of different magnetostriction constants and method of fabricating the same
JPH0278006A (en) * 1988-09-13 1990-03-19 Nec Corp Thin film magnetic head
EP0455359A2 (en) * 1990-04-30 1991-11-06 Seagate Technology International Thin film magnetic head and method of manufacture thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5038325A (en) * 1973-08-09 1975-04-09
JPS55101124A (en) * 1979-01-29 1980-08-01 Ibm Thin layer magnetic haed assembly
US4241367A (en) * 1978-03-03 1980-12-23 Matsushita Electric Industrial Co., Ltd. Thin film magnetic head

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5038325A (en) * 1973-08-09 1975-04-09
US4241367A (en) * 1978-03-03 1980-12-23 Matsushita Electric Industrial Co., Ltd. Thin film magnetic head
JPS55101124A (en) * 1979-01-29 1980-08-01 Ibm Thin layer magnetic haed assembly

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4663683A (en) * 1982-11-11 1987-05-05 Matsushita Electric Industrial Co., Ltd. Magnetoresistive thin film head
US4750072A (en) * 1985-02-20 1988-06-07 Hitachi, Ltd. Thin-film magnetic head provided with a magnetic film having regions of different magnetostriction constants and method of fabricating the same
JPH0278006A (en) * 1988-09-13 1990-03-19 Nec Corp Thin film magnetic head
EP0455359A2 (en) * 1990-04-30 1991-11-06 Seagate Technology International Thin film magnetic head and method of manufacture thereof
US5170303A (en) * 1990-04-30 1992-12-08 Seagate Technology Inc. Inductive thin film head having improved readback characteristics
USRE35228E (en) * 1990-04-30 1996-05-07 Seagate Technology, Inc. Inductive thin film head having improved readback characteristics

Also Published As

Publication number Publication date
JPS6353615B2 (en) 1988-10-25

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