[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

Johnson et al., 1996 - Google Patents

Thin-film media—current and future technology

Johnson et al., 1996

Document ID
7287489111088116771
Author
Johnson K
Mate C
Merz J
White R
Wu A
Publication year
Publication venue
IBM journal of research and development

External Links

Snippet

In the last ten years, the fundamental technology of recording media has evolved from particulate to thin film. The introduction of magnetoresistive heads in 1990 has had further impact on the design of thin-film media. Changes in substrates, magnetic films, overcoats …
Continue reading at ieeexplore.ieee.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
    • G11B5/72—Protective coatings, e.g. antistatic, antifriction
    • G11B5/725—Protective coatings, e.g. antistatic, antifriction containing a lubricant
    • 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/8408—Processes or apparatus specially adapted for manufacturing record carriers protecting the magnetic layer
    • 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
    • G11B5/7315—Base layers, i.e. all layers lying under the first magnetic recording layer without bonding agent in the material substrates
    • 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/8404—Processes or apparatus specially adapted for manufacturing record carriers manufacturing base 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/60—Fluid-dynamic spacing of heads form record-carriers
    • G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion
    • 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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/82—Disk carriers
    • 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/855—Coating only part of a support with a magnetic layer
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
    • 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
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermo-magnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form

Similar Documents

Publication Publication Date Title
Johnson et al. Thin-film media—current and future technology
US7045215B2 (en) Magnetic recording disk and process for manufacture thereof
US6132875A (en) Magnetic recording medium and magnetic head having carbon protective layers
US6245417B1 (en) Magnetic recording medium comprising multilayered carbon-containing protective overcoats
JP2007272995A (en) Method for determining whether or not magnetic disk device and non-magnetic substrate are good, magnetic disk, and magnetic disk device
WO2007007650A1 (en) Substrate for magnetic recording medium, magnetic recording medium, and magnetic recording and reproducing apparatus
JP2007042263A (en) Substrate for magnetic recording medium, magnetic recording medium, and magnetic recording and reproducing apparatus
US20070248749A1 (en) Reducing pad burnish damages on magnetic recording media with mixed low molecular weight free lubricant
US6238780B1 (en) Magnetic recording medium comprising multilayered carbon-containing protective overcoats
JP3965277B2 (en) Magnetic recording medium and magnetic storage device
US6136421A (en) Magneto-resistance recording media comprising multilayered protective overcoats
Bhushan Macro-and microtribology of magnetic storage devices
US6517956B1 (en) Magneto-resistance recording media comprising aluminum nitride corrosion barrier layer and a c-overcoat
US6322880B1 (en) Magneto-resistance recording media comprising a foundation layer and a C-overcoat
US6764738B1 (en) Magnetic recording medium with patterned substrate
JP3657196B2 (en) Magnetic recording medium and magnetic disk device
US5232750A (en) Method for fabricating magnetic recording medium
JP2003217110A (en) Magnetic disk and magnetic disk device
JP2005092970A (en) Magnetic recording medium and magnetic storage device
Jiaa et al. Opportunities and challenges for near contact recording
KR100629034B1 (en) Magnetic recording medium with patterned substrate
US20020048692A1 (en) Disk medium and disk apparatus
Brunner Properties of carbon overcoats and perfluoro-polyether lubricants in hard disk drives
JP4150418B2 (en) Magnetic disk and manufacturing method thereof
Hardeman New materials in rigid disks