GB2153393B - Thin film ferromagnetic layer for magnetic recording media - Google Patents

Thin film ferromagnetic layer for magnetic recording media

Info

Publication number
GB2153393B
GB2153393B GB08501272A GB8501272A GB2153393B GB 2153393 B GB2153393 B GB 2153393B GB 08501272 A GB08501272 A GB 08501272A GB 8501272 A GB8501272 A GB 8501272A GB 2153393 B GB2153393 B GB 2153393B
Authority
GB
United Kingdom
Prior art keywords
thin film
magnetic recording
recording media
ferromagnetic layer
film ferromagnetic
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
GB08501272A
Other versions
GB8501272D0 (en
GB2153393A (en
Inventor
Kenji Yazawa
Haruko Masuya
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
Priority claimed from JP59009170A external-priority patent/JPS60154324A/en
Priority claimed from JP59009171A external-priority patent/JPS60154325A/en
Application filed by Sony Corp filed Critical Sony Corp
Publication of GB8501272D0 publication Critical patent/GB8501272D0/en
Publication of GB2153393A publication Critical patent/GB2153393A/en
Application granted granted Critical
Publication of GB2153393B publication Critical patent/GB2153393B/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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/85—Coating a support with a magnetic layer by vapour deposition
    • 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
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
    • G11B5/658—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing oxygen, e.g. molecular oxygen or magnetic oxide
    • 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
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
    • G11B5/653—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing Fe or Ni
    • 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
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
    • G11B5/656—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing Co
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Thin Magnetic Films (AREA)
GB08501272A 1984-01-20 1985-01-18 Thin film ferromagnetic layer for magnetic recording media Expired GB2153393B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP59009170A JPS60154324A (en) 1984-01-20 1984-01-20 Thin film type magnetic recording medium
JP59009171A JPS60154325A (en) 1984-01-20 1984-01-20 Thin film type magnetic recording medium

Publications (3)

Publication Number Publication Date
GB8501272D0 GB8501272D0 (en) 1985-02-20
GB2153393A GB2153393A (en) 1985-08-21
GB2153393B true GB2153393B (en) 1987-06-03

Family

ID=26343853

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08501272A Expired GB2153393B (en) 1984-01-20 1985-01-18 Thin film ferromagnetic layer for magnetic recording media

Country Status (6)

Country Link
KR (1) KR930006588B1 (en)
CA (1) CA1235485A (en)
DE (1) DE3501832A1 (en)
FR (1) FR2558632B1 (en)
GB (1) GB2153393B (en)
NL (1) NL8500084A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR870006535A (en) * 1985-02-27 1987-07-13 나가이 아쯔시 Magneto-optical recording media
JPS63237210A (en) * 1987-03-25 1988-10-03 Sony Corp Magnetic recording medium

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR94908E (en) * 1964-01-24 1970-01-23 Lignes Telegraph Telephon Improvements in the production processes of thin magnetic films.
FR1541019A (en) * 1967-07-28 1968-10-04 Centre Nat Rech Scient Magnetic structures in thin films and their application to magnetic memories of binary information
JPS5798133A (en) * 1980-12-05 1982-06-18 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS5883328A (en) * 1981-11-12 1983-05-19 Fuji Photo Film Co Ltd Magnetic recording medium

Also Published As

Publication number Publication date
DE3501832A1 (en) 1985-07-25
FR2558632A1 (en) 1985-07-26
NL8500084A (en) 1985-08-16
GB8501272D0 (en) 1985-02-20
FR2558632B1 (en) 1988-11-18
GB2153393A (en) 1985-08-21
KR930006588B1 (en) 1993-07-21
KR850005666A (en) 1985-08-28
CA1235485A (en) 1988-04-19

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960118