High-capacity data storage realized with near-field optics

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  • NISHIDA Tetsuya
    Storage Technology Research Center, Central Research Laboratory, Hitachi Ltd.

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  • 近接場光で実現する大容量ストレージ
  • キンセツバコウ デ ジツゲンスル ダイヨウリョウ ストレージ

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Abstract

<p>In order to realize high-capacity data storage up to terabit per square inch, it is necessary to overcome the diffraction limit of light and thermal instability, i.e. the super para magnetism limits, of magnetic materials. Hybrid recording onto magnetic media using near-field light with a couple of tens nm diameter is a promising method. In this report a newly developed near-field plasmon probe named the “nanobeak” with high conversion efficiency of far-field light is introduced. Hybrid recording onto Co/Pd-multilayer bit-patterned media using a near-field optical head with the nanobeak is explained.</p>

Journal

  • Oyo Buturi

    Oyo Buturi 77 (6), 650-655, 2008-06-10

    The Japan Society of Applied Physics

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