[go: up one dir, main page]

Velu et al., 1991 - Google Patents

CoSm‐based high‐coercivity thin films for longitudinal recording

Velu et al., 1991

Document ID
6769744924338306435
Author
Velu E
Lambeth D
Publication year
Publication venue
Journal of applied physics

External Links

Snippet

In order to produce thin media with high intrinsic coercivity, we studied a number of CoSm films produced by rf‐diode sputtering. We determined an optimized set of sputtering parameters for films sputtered both on glass and NiP‐coated Al substrates with and without …
Continue reading at pubs.aip.org (other versions)

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
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
    • G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
    • 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
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70605—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material metals or alloys
    • G11B5/70615—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material metals or alloys containing Fe metal or alloys
    • 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
    • G11B5/73—Base layers, i.e. all layers lying under the first magnetic recording layer
    • G11B5/731—Base layers, i.e. all layers lying under the first magnetic recording layer without bonding agent in the material
    • G11B5/7325—Base layers, i.e. all layers lying under the first magnetic recording layer without bonding agent in the material layers between substrate and first magnetic recording layer other than soft magnetic layers and seed layers
    • 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—Comprising only the magnetic material without bonding agent
    • G11B5/65—Characterized by its composition
    • G11B5/656—Characterized by its composition containing Co
    • 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—Comprising only the magnetic material without bonding agent
    • G11B5/66—Comprising only the magnetic material without bonding agent consisting of several layers
    • 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
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/702—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent
    • 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

Similar Documents

Publication Publication Date Title
Velu et al. CoSm‐based high‐coercivity thin films for longitudinal recording
US5344706A (en) Magnetic recording medium comprising an underlayer and a cobalt samarium amorphous magnetic layer having a SmCo5 crystalline interface with the underlayer
US5846648A (en) Magnetic alloy having a structured nucleation layer and method for manufacturing same
US6156404A (en) Method of making high performance, low noise isotropic magnetic media including a chromium underlayer
US5658659A (en) Magnetic alloy and method for manufacturing same
US6472047B1 (en) Magnetic recording disk
US20040191578A1 (en) Method of fabricating L10 ordered fePt or FePtX thin film with (001) orientation
US5004652A (en) High-coercivity thin-film recording medium and method
EP0531035B1 (en) Magnetic recording medium
US5162158A (en) Low noise magnetic thin film longitudinal media
EP0140513A1 (en) Thin film magnetic recording structures
US5057200A (en) Method of forming thin-film recording medium
US6410133B1 (en) Magnetic recording disk, method of the magnetic recording disk and magnetic recording apparatus
JP3612087B2 (en) Magnetic recording medium
US5049451A (en) High-coercivity thin-film recording medium
JP2001319314A (en) Magnetic recording medium, method of manufacturing the same, and magnetic recording apparatus using the same
US6037052A (en) Magnetic thin film ferrite having a ferrite underlayer
Yamashita et al. Sputtered Ni/sub x/P underlayer for CoPt-based thin film magnetic media
US6821618B2 (en) Magnetic recording medium and process for producing the same
US6753077B2 (en) Magnetic recording medium and process for producing the same
JP2000327491A (en) Inorganic compound thin film, magnetic recording medium and magnetic recording device
US4609593A (en) Magnetic recording medium
US6159594A (en) Magnetic recording medium
US6916530B2 (en) Perpendicular magnetic recording medium
US6117282A (en) Method of producing amorphous Co-Tb magnetic recording thin films