JPS5661022A - Magnetic head - Google Patents

Magnetic head

Info

Publication number
JPS5661022A
JPS5661022A JP13726279A JP13726279A JPS5661022A JP S5661022 A JPS5661022 A JP S5661022A JP 13726279 A JP13726279 A JP 13726279A JP 13726279 A JP13726279 A JP 13726279A JP S5661022 A JPS5661022 A JP S5661022A
Authority
JP
Japan
Prior art keywords
thin film
ferromagnetic substance
rare earth
ratio
improve
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
JP13726279A
Other languages
Japanese (ja)
Inventor
Yoshifumi Sakurai
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.)
Olympus Corp
Original Assignee
Olympus Optical Co 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP13726279A priority Critical patent/JPS5661022A/en
Priority to DE19803039290 priority patent/DE3039290A1/en
Publication of JPS5661022A publication Critical patent/JPS5661022A/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
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/37—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using galvano-magnetic devices, e.g. Hall-effect devices using Hall or Hall-related effect, e.g. planar-Hall effect or pseudo-Hall effect
    • G11B5/372—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using galvano-magnetic devices, e.g. Hall-effect devices using Hall or Hall-related effect, e.g. planar-Hall effect or pseudo-Hall effect in magnetic thin films
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F10/00—Thin magnetic films, e.g. of one-domain structure
    • H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
    • H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
    • H01F10/12—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys
    • H01F10/13—Amorphous metallic alloys, e.g. glassy metals
    • H01F10/133—Amorphous metallic alloys, e.g. glassy metals containing rare earth metals
    • H01F10/135—Amorphous metallic alloys, e.g. glassy metals containing rare earth metals containing transition metals

Abstract

PURPOSE: To improve the S/N ratio, by constituting a head with an amorphous thin film Hall element consisting of an alloy including rare earth element and transition metal and with a ferromagnetic substance block clipping this.
CONSTITUTION: A thin film insulation layer 12 is formed on a ferromagnetic substance substrate 10 of the 1st core half piece, and a thin film 14 of GdCo etc. is formed with vapor deposition on it. Gd or the like is used as the rare earth element, and the ratio of the components is taken as 40% or less to form an easy magnetizing axis vertical to the film surface. A ferromagnetic substance block 24 of the 2nd core half piece is fitted to it so that the Hall element 15 is clipped and it is contained in a head block 26 through depression. Thus, current noise due to crystal grain field can be reduced because of amorphous thin film 14. Further, since the magnetic path length is short for the magnetic circuit, the magnetic flux ϕ passes through the thin film 14 with a good efficiency to improve S/N.
COPYRIGHT: (C)1981,JPO&Japio
JP13726279A 1979-10-24 1979-10-24 Magnetic head Pending JPS5661022A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP13726279A JPS5661022A (en) 1979-10-24 1979-10-24 Magnetic head
DE19803039290 DE3039290A1 (en) 1979-10-24 1980-10-17 Magnetic head with high signal=to=noise ratio - has amorphous alloy thin film wall element positioned with its surface normal to magnetic flux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13726279A JPS5661022A (en) 1979-10-24 1979-10-24 Magnetic head

Publications (1)

Publication Number Publication Date
JPS5661022A true JPS5661022A (en) 1981-05-26

Family

ID=15194546

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13726279A Pending JPS5661022A (en) 1979-10-24 1979-10-24 Magnetic head

Country Status (2)

Country Link
JP (1) JPS5661022A (en)
DE (1) DE3039290A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58108027A (en) * 1981-12-18 1983-06-28 Victor Co Of Japan Ltd Magnetic head
US5093753A (en) * 1989-06-27 1992-03-03 Thomson-Csf Magnetic reading head using the hall effect

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4577250A (en) * 1981-12-18 1986-03-18 Victor Company Of Japan, Limited Hall effect magnetic head

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943570A (en) * 1973-09-28 1976-03-09 Hitachi, Ltd. Semiconductor magnetic head

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58108027A (en) * 1981-12-18 1983-06-28 Victor Co Of Japan Ltd Magnetic head
JPS639283B2 (en) * 1981-12-18 1988-02-26 Victor Company Of Japan
US5093753A (en) * 1989-06-27 1992-03-03 Thomson-Csf Magnetic reading head using the hall effect

Also Published As

Publication number Publication date
DE3039290A1 (en) 1981-05-07

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