JPS6428248A - Composite magnetic head - Google Patents

Composite magnetic head

Info

Publication number
JPS6428248A
JPS6428248A JP18205587A JP18205587A JPS6428248A JP S6428248 A JPS6428248 A JP S6428248A JP 18205587 A JP18205587 A JP 18205587A JP 18205587 A JP18205587 A JP 18205587A JP S6428248 A JPS6428248 A JP S6428248A
Authority
JP
Japan
Prior art keywords
fusing
thin films
magnetic
magnetic head
temperature
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
JP18205587A
Other languages
Japanese (ja)
Other versions
JP2551014B2 (en
Inventor
Tetsuo Shimada
Heikichi Sato
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP62182055A priority Critical patent/JP2551014B2/en
Publication of JPS6428248A publication Critical patent/JPS6428248A/en
Application granted granted Critical
Publication of JP2551014B2 publication Critical patent/JP2551014B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
    • C03C8/24—Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders

Abstract

PURPOSE:To enable fusing action at a temperature not to influence magnetic characteristics, by integrating a pair of half materials of magnetic core having metallic magnetic thin films by fusing glass having a specific composition and constituting an operation gap by the thin film. CONSTITUTION:A composite magnetic head is obtained by integrating a pair of half materials 22A and 22B equipped with metallic magnetic thin films 21A and 21B (thin film of Fe-Si-Ga-Ri alloy) on substrates 20A and 20B by fusing glass having the following composition and an operation gap 24 is constituted by the metallic magnetic thin films 21A and 21B. The fusing glass has a composition consisting of 40-62wt.% PbO, 11-25wt.% SiO2, 5-9wt.% B2O3, 5-9wt.% Bi2O3, 0-11wt.% Na2O (0wt.% in not included) and 10-18wt.% sum of Fe2O3 and ZnO. By the composite magnetic head, the fusing glass 23 has 390-430 deg.C transition point and 430-460 deg.C yield point, 530-630 deg.C can be set as an operation temperature and fusing operation can be carried out at <=65 deg.C temperature not to influence magnetic characteristics of the metallic magnetic thin films 21A and 21B.
JP62182055A 1987-07-21 1987-07-21 Composite magnetic head Expired - Fee Related JP2551014B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62182055A JP2551014B2 (en) 1987-07-21 1987-07-21 Composite magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62182055A JP2551014B2 (en) 1987-07-21 1987-07-21 Composite magnetic head

Publications (2)

Publication Number Publication Date
JPS6428248A true JPS6428248A (en) 1989-01-30
JP2551014B2 JP2551014B2 (en) 1996-11-06

Family

ID=16111552

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62182055A Expired - Fee Related JP2551014B2 (en) 1987-07-21 1987-07-21 Composite magnetic head

Country Status (1)

Country Link
JP (1) JP2551014B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01199309A (en) * 1988-02-03 1989-08-10 Sanyo Electric Co Ltd Glass for joining core for composite type magnetic head
JPH0487005A (en) * 1990-07-31 1992-03-19 Sanyo Electric Co Ltd Magnetic head
JPH06162436A (en) * 1992-06-16 1994-06-10 Samsung Electro Mech Co Ltd Composite magnetic head
KR100242036B1 (en) * 1991-01-08 2000-02-01 다카노 야스아키 Magnetic head
DE19981108B4 (en) * 1998-05-20 2004-09-16 Nsk Ltd. Rolling bearings with solid lubrication

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4931284A (en) * 1972-07-21 1974-03-20
JPS49103200A (en) * 1973-02-06 1974-09-30
JPS6228909A (en) * 1985-07-31 1987-02-06 Hitachi Metals Ltd Magnetic head and its manufacture

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4931284A (en) * 1972-07-21 1974-03-20
JPS49103200A (en) * 1973-02-06 1974-09-30
JPS6228909A (en) * 1985-07-31 1987-02-06 Hitachi Metals Ltd Magnetic head and its manufacture

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01199309A (en) * 1988-02-03 1989-08-10 Sanyo Electric Co Ltd Glass for joining core for composite type magnetic head
JPH0487005A (en) * 1990-07-31 1992-03-19 Sanyo Electric Co Ltd Magnetic head
KR100242036B1 (en) * 1991-01-08 2000-02-01 다카노 야스아키 Magnetic head
JPH06162436A (en) * 1992-06-16 1994-06-10 Samsung Electro Mech Co Ltd Composite magnetic head
DE19981108B4 (en) * 1998-05-20 2004-09-16 Nsk Ltd. Rolling bearings with solid lubrication

Also Published As

Publication number Publication date
JP2551014B2 (en) 1996-11-06

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees