• DocumentCode
    3812961
  • Title

    New magnetically induced super resolution disk by using exchange-coupled magnetic layers

  • Author

    J. Nakajima;A. Takahashi;S. Terashima

  • Author_Institution
    Precision Technol. Dev. Center, Sharp Corp., Nara, Japan
  • Volume
    31
  • Issue
    6
  • fYear
    1995
  • Firstpage
    3247
  • Lastpage
    3249
  • Abstract
    Readout process of a new type of magnetically induced super resolution (MSR) disk was analyzed by calculating a domain shape in exchange-coupled ferrimagnetic layers. Analysis revealed that a suitable wall energy density at an interface between the layers existed for improving readout characteristics. This result obtained from calculation was confirmed by experiments. An areal recording density of 2.4 Gb/in/sup 2/ was achieved by using an 830 nm wavelength laser.
  • Keywords
    "Temperature","Magnetic analysis","Magnetization","Magnetic domains","Shape","Laser beams","Ferrimagnetic materials","Magnetooptic recording","Magnetic fields","Magnetic recording"
  • Journal_Title
    IEEE Transactions on Magnetics
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/20.490338
  • Filename
    490338
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3812961