GB1599161A - Magnetic recording medium and method of making the same - Google Patents

Magnetic recording medium and method of making the same Download PDF

Info

Publication number
GB1599161A
GB1599161A GB28448/77A GB2844877A GB1599161A GB 1599161 A GB1599161 A GB 1599161A GB 28448/77 A GB28448/77 A GB 28448/77A GB 2844877 A GB2844877 A GB 2844877A GB 1599161 A GB1599161 A GB 1599161A
Authority
GB
United Kingdom
Prior art keywords
film
magnetic recording
magnetic
substrate
oxygen
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.)
Expired
Application number
GB28448/77A
Other languages
English (en)
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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
Priority claimed from JP51084829A external-priority patent/JPS609325B2/ja
Priority claimed from JP11527176A external-priority patent/JPS5339707A/ja
Priority claimed from JP11693276A external-priority patent/JPS5342010A/ja
Priority claimed from JP13337876A external-priority patent/JPS5358206A/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1599161A publication Critical patent/GB1599161A/en
Expired 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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/72—Protective coatings, e.g. anti-static or antifriction
    • 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/85—Coating a support with a magnetic layer by vapour deposition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9265—Special properties
    • Y10S428/928—Magnetic property
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12465—All metal or with adjacent metals having magnetic properties, or preformed fiber orientation coordinate with shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12556—Organic component
    • Y10T428/12569—Synthetic resin
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12611—Oxide-containing component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736—Al-base component
    • Y10T428/1275—Next to Group VIII or IB metal-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736—Al-base component
    • Y10T428/1275—Next to Group VIII or IB metal-base component
    • Y10T428/12757—Fe
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12931—Co-, Fe-, or Ni-base components, alternative to each other
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12944—Ni-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/19—Sheets or webs edge spliced or joined
    • Y10T428/192—Sheets or webs coplanar
    • Y10T428/197—Sheets or webs coplanar with noncoplanar reinforcement
    • Y10T428/198—Pile or nap surface sheets connected
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Magnetic Record Carriers (AREA)
  • Thin Magnetic Films (AREA)
GB28448/77A 1976-07-15 1977-07-07 Magnetic recording medium and method of making the same Expired GB1599161A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP51084829A JPS609325B2 (ja) 1976-07-15 1976-07-15 磁性薄膜
JP11527176A JPS5339707A (en) 1976-09-24 1976-09-24 Magnetic recording medium
JP11693276A JPS5342010A (en) 1976-09-28 1976-09-28 Preparation of magnetic recording medium
JP13337876A JPS5358206A (en) 1976-11-05 1976-11-05 Magnetic recording medium

Publications (1)

Publication Number Publication Date
GB1599161A true GB1599161A (en) 1981-09-30

Family

ID=27467016

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28448/77A Expired GB1599161A (en) 1976-07-15 1977-07-07 Magnetic recording medium and method of making the same

Country Status (6)

Country Link
US (1) US4239835A (enExample)
CA (1) CA1093690A (enExample)
DE (1) DE2731924C3 (enExample)
FR (1) FR2358722A1 (enExample)
GB (1) GB1599161A (enExample)
NL (1) NL179688C (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153391A (en) * 1983-12-27 1985-08-21 Sharp Kk Protective coating for cobalt-chromium alloy magnetic recording layer
GB2153851A (en) * 1984-01-20 1985-08-29 Sony Corp Ferro-magnetic layer of magnetic recording media

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU531847B2 (en) * 1979-02-23 1983-09-08 Sekisui Kagaku Kogyo Kabushiki Kaisha Magnetic recording medium + process for production thereof
JPS563428A (en) * 1979-06-20 1981-01-14 Fuji Photo Film Co Ltd Magnetic recording medium
JPS6033289B2 (ja) * 1979-07-18 1985-08-02 松下電器産業株式会社 金属薄膜型磁気記録媒体
FR2473209A1 (fr) * 1980-01-08 1981-07-10 Sagem Procede pour former une couche de protection sur une couche magnetique et couche magnetique protegee obtenue par ce procede
JPS5832767B2 (ja) * 1980-01-24 1983-07-15 ヤマハ株式会社 硬質磁性材料の製法
JPS56134303A (en) * 1980-03-25 1981-10-21 Matsushita Electric Ind Co Ltd Signal recording system
JPS56140613A (en) * 1980-04-04 1981-11-04 Tdk Corp Manufacture of ferromagnetic thin film
JPS56143519A (en) * 1980-04-08 1981-11-09 Tdk Corp Magnetic recording medium and manufacturing device
EP0046269B1 (en) * 1980-08-18 1986-08-13 Matsushita Electric Industrial Co., Ltd. Magnetic recording media and process for fabricating the same
JPS5798133A (en) * 1980-12-05 1982-06-18 Matsushita Electric Ind Co Ltd Magnetic recording medium
CA1185013A (en) * 1981-01-14 1985-04-02 Kenji Ohta Magneto-optic memory medium
JPS57143728A (en) * 1981-02-27 1982-09-06 Fuji Photo Film Co Ltd Magnetic recording medium
JPS57143729A (en) * 1981-02-27 1982-09-06 Fuji Photo Film Co Ltd Magnetic recording medium
JPS57164432A (en) * 1981-04-02 1982-10-09 Fuji Photo Film Co Ltd Magnetic recording medium
US4489124A (en) * 1981-04-06 1984-12-18 Olympus Optical Co Process for forming thin film, heat treatment process of thin film sheet, and heat treatment apparatus therefor
CA1188796A (en) * 1981-04-14 1985-06-11 Kenji Yazawa Magnetic recording medium
JPS57179952A (en) * 1981-04-24 1982-11-05 Fuji Photo Film Co Ltd Method and apparatus for magnetic recording medium
JPS57191830A (en) * 1981-05-22 1982-11-25 Sony Corp Magnetic recording medium
US4419385A (en) * 1981-09-24 1983-12-06 Hughes Aircraft Company Low temperature process for depositing an oxide dielectric layer on a conductive surface and multilayer structures formed thereby
US4374009A (en) * 1981-09-28 1983-02-15 Xerox Corporation Electrochemical post treatment of perpendicular magnetic recording media
DE3277337D1 (en) * 1981-09-28 1987-10-22 Xerox Corp Post treatment of perpendicular magnetic recording media
US4388367A (en) * 1981-09-28 1983-06-14 Xerox Corporation Perpendicular magnetic recording medium and fabrication
US4405677A (en) * 1981-09-28 1983-09-20 Xerox Corporation Post treatment of perpendicular magnetic recording media
JPS5883328A (ja) * 1981-11-12 1983-05-19 Fuji Photo Film Co Ltd 磁気記録媒体
JPS58111127A (ja) * 1981-12-24 1983-07-02 Ulvac Corp 耐摩耗性磁気記録体の製造法
JPS58130443A (ja) * 1982-01-28 1983-08-03 Fuji Photo Film Co Ltd 磁気記録媒体の製造方法
JPS5961105A (ja) * 1982-09-30 1984-04-07 Fuji Photo Film Co Ltd 磁気記録媒体
JPS5987622A (ja) * 1982-11-09 1984-05-21 Ulvac Corp 磁気記録体並にその製造法
EP0122030B1 (en) * 1983-03-08 1987-08-26 Nihon Shinku Gijutsu Kabushiki Kaisha A magnetic recording member and a manufacturing method for such a member
JPS59171029A (ja) * 1983-03-18 1984-09-27 Fuji Photo Film Co Ltd 磁気記録媒体
JPS59178617A (ja) * 1983-03-30 1984-10-09 Tdk Corp 磁気記録媒体の製造方法
JPS6082638A (ja) * 1983-10-07 1985-05-10 Hitachi Ltd Νｉ−Ｃｏ−Ｆｅの三元系合金薄膜およびその製造方法
JPH0766507B2 (ja) * 1984-02-16 1995-07-19 コニカ株式会社 磁気記録媒体
CA1235808A (en) * 1984-03-22 1988-04-26 Tetsuo Oka Vertical magnetic recording medium and process for preparation thereof
US4525759A (en) * 1984-04-02 1985-06-25 Shipley Company Inc. Aluminum storage disc
US4803130A (en) * 1984-12-21 1989-02-07 Minnesota Mining And Manufacturing Company Reactive sputtering process for recording media
US4729924A (en) * 1984-12-21 1988-03-08 Minnesota Mining And Manufacturing Company Metallic thin film magnetic recording medium having a hard protective layer
US4816351A (en) * 1985-02-26 1989-03-28 Canon Kabushiki Kaisha Magnetic recording medium
JP2662777B2 (ja) * 1985-04-15 1997-10-15 日立マクセル株式会社 磁気記録媒体およびその製造方法
JPS62208412A (ja) * 1986-03-07 1987-09-12 Hitachi Ltd 磁気記録媒体およびその製造方法
EP0265246B1 (en) * 1986-10-21 1994-03-09 Matsushita Electric Industrial Co., Ltd. Magnetic iron oxide film and production thereof
US4752344A (en) * 1986-12-22 1988-06-21 International Business Machines Corporation Magnetic layer and method of manufacture
US5400307A (en) * 1987-08-26 1995-03-21 Sony Corporation Magneto-optical recording medium with stacked layer structure

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2970075A (en) * 1958-10-13 1961-01-31 Gen Electric Cast intermediate or blank and method of preparation
US3433721A (en) * 1960-03-28 1969-03-18 Gen Electric Method of fabricating thin films
US3471271A (en) * 1965-08-16 1969-10-07 Udylite Corp Electrodeposition of a micro-cracked corrosion resistant nickel-chromium plate
US3520664A (en) * 1966-11-10 1970-07-14 Ibm Magnetic thin-film device
US3700500A (en) * 1967-12-04 1972-10-24 Gen Electric Magnetic films having a predetermined coercivity
US3702239A (en) * 1969-03-17 1972-11-07 Sperry Rand Corp Magnetic storage medium
JPS5041365Y2 (enExample) * 1971-01-08 1975-11-25
US3857734A (en) * 1972-05-04 1974-12-31 Honeywell Inc Manganese bismuth thin films on reactive substrates
DE2250481C3 (de) * 1972-10-14 1981-08-27 Ibm Deutschland Gmbh, 7000 Stuttgart Verfahren zur Herstellung eines magnetischen Aufzeichnungsträgers
US4005698A (en) * 1974-10-18 1977-02-01 International Business Machines Corporation Photon energy converter
US3996095A (en) * 1975-04-16 1976-12-07 International Business Machines Corporation Epitaxial process of forming ferrite, Fe3 O4 and γFe2 O3 thin films on special materials
US4024489A (en) * 1975-11-18 1977-05-17 International Business Machines Corporation Magnetoresistive sandwich including sensor electrically parallel with electrical shunt and magnetic biasing layers
DE2556755C2 (de) * 1975-12-17 1982-04-15 Ibm Deutschland Gmbh, 7000 Stuttgart Mehrschichtiger magnetischer Aufzeichnungsträger
US4088547A (en) * 1976-09-01 1978-05-09 Borg-Warner Corporation Method for producing a coated metal nodular solar heat collector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153391A (en) * 1983-12-27 1985-08-21 Sharp Kk Protective coating for cobalt-chromium alloy magnetic recording layer
GB2153851A (en) * 1984-01-20 1985-08-29 Sony Corp Ferro-magnetic layer of magnetic recording media

Also Published As

Publication number Publication date
DE2731924B2 (de) 1980-11-20
NL179688B (nl) 1986-05-16
DE2731924A1 (de) 1978-01-19
US4239835A (en) 1980-12-16
CA1093690A (en) 1981-01-13
FR2358722A1 (fr) 1978-02-10
FR2358722B1 (enExample) 1981-08-07
NL179688C (nl) 1986-10-16
DE2731924C3 (de) 1986-10-23
NL7707769A (nl) 1978-01-17

Similar Documents

Publication Publication Date Title
GB1599161A (en) Magnetic recording medium and method of making the same
US3996095A (en) Epitaxial process of forming ferrite, Fe3 O4 and γFe2 O3 thin films on special materials
US4387136A (en) Magnetic recording medium and apparatus for preparing the same
US5024854A (en) Method of manufacturing perpendicular type magnetic recording member
US4343834A (en) Process for preparing magnetic recording medium
US4990361A (en) Method for producing magnetic recording medium
US3775179A (en) Magnetic recording media
JPH0133924B2 (enExample)
JPS5987622A (ja) 磁気記録体並にその製造法
US4828919A (en) Magnetic recording medium and process for preparing the same
JPS5841443A (ja) 磁気記録媒体の製法
EP0262224A1 (en) Magnetic recording medium
JPS61276124A (ja) 垂直磁気記録媒体の製造方法
US5736263A (en) Magnetic recording medium comprising successive magnetic metallic films of iron, nickel, and cobalt deposited on a substrate
JP2735276B2 (ja) Ｍｎ―Ａ▲ｌ▼強磁性体薄膜とその製造方法
JPS61242321A (ja) 磁気記録媒体
JP2894253B2 (ja) 高機能性薄膜の製造方法
JPH0676281A (ja) 磁気記録媒体及びその製造方法、製造装置
JPS5850629A (ja) 磁気記録媒体の製造方法
JPH0337724B2 (enExample)
JPS59167834A (ja) 磁気記録媒体
JPH0460919A (ja) 磁気記録媒体
JPS63266627A (ja) 垂直磁気記録媒体
JPS6194237A (ja) 垂直磁気記録媒体の製造方法
JPH0320815B2 (enExample)

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920707