Nanometer-Sized Phase-Change Recording Using a Scanning Near-Field Optical Microscope with a Laser Diode

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概要

• 論文の詳細を見る

• We present for the first time a nanometer-sized phase-change recording using a scanning near-field optical microscope (PC-SNOM recording). The recording experiments were performed with a SNOM using a 785-nm-wavelength semiconductor Baser diode, shear force detection for gap control and reflected light detection for observing the domains (reading). The recording media of ZnS・SiO_2(20 nm)/GeSbTe(30 nm)/ZnS・SiO_2(150nm)/polycarbonate substrate were used. The writings were done at laser powers of 8.4-7.3 mW in the probe for pulse widths of 5 or 0.5 ms. As a result, we obtained a minimum recorded domain size of 60 nm in diameter. This size shows a potential to achieve an ultrahigh density PC-SNOM recording with about 170 Gb/in^2. A possibility of achieving high speed readout for the future data storage is also discussed.

• 社団法人応用物理学会の論文
• 1996-01-30

著者

• Hosaka S

  Hitachi Ltd. Tokyo Jpn

• Hosaka Sumio

  Advanced Research Laboratory Hitachi Ltd.

• SHINTANI Toshimichi

  Central Research Laboratory, Hitachi, Ltd.

• HIROTSUNE Akemi

  Central Research Laboratory, Hitachi, Ltd.

• TERAO Motoyasu

  Central Research Laboratory, Hitachi, Ltd.

• Hosaka S

  Gunma Univ. Kiryu Jpn

• Terao Motoyasu

  Central Resarch Laboratory Hitachi Ltd.

• MIYAMOTO Mitsuhide

  Advanced Research Laboratory, Hitachi Ltd.

• SHINTANI Toshimichi

  Advanced Research Laboratory, Hitachi Ltd.

• YOSHIDA Masaru

  Hitachi Instruments Service Co., Ltd.

• FUJITA Kouichi

  Nissei-Sangyo Co., Ltd.

• KAMMER Stefan

  TopoMetrix Inc., Santa Clara

• Shintani T

  Hitachi Ltd. Tokyo Jpn

• Kammer Stefan

  Topometrix Inc. Santa Clara

• Fujita Kouichi

  Nissei-sangyo Co. Ltd.

• MIYAMOTO Masanao

  Department of Electronic Engineering, University of Tokyo

• Miyamoto M

  Department Of Electronic Engineering University Of Tokyo

• Yoshida Masaru

  Hitachi Instruments Service Co. Ltd.

• Hirotsune Akemi

  Central Research Laboratory Hitachi Ltd.

• HIROTSUNE Akemi

  Central Research Laboratory, Hitachi Ltd.

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