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Proceedings Paper

Ultrahigh density data storage by atomic manipulation
Author(s): Ryo Imura; Hajime Koyanagi; M. Miyamoto; Toshimichi Shintani; Kimio Nakamura; Atsushi Kikukawa; Sumio Hosaka
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Paper Abstract

Feasibility of ultrahigh density information data storage has been newly demonstrated by using an atomic force microscope (AFM) and a scanning near-field optical microscope (SNOM). Ultrasmall gold dots about 20 to 80 nm in diameter could be stably formed on Si substrate in air by adjusting an applied pulsed voltage of AFM probe coated with gold thin film. Magnetic domains about 60 to 80 nm in diameter also could be successfully recorded on magneto optical disk material (Pt/Co multilayer) by controlling a writing pulsed laser power of sharp fiber probe with SNOM. These indicate that this technique has a potential to realize a storage density of more than 100 Gb/in2 and even 1 Tb/in2.

Paper Details

Date Published: 12 October 1994
PDF: 9 pages
Proc. SPIE 2338, 1994 Topical Meeting on Optical Data Storage, (12 October 1994); doi: 10.1117/12.190165
Show Author Affiliations
Ryo Imura, Hitachi, Ltd. (Japan)
Hajime Koyanagi, Hitachi, Ltd. (Japan)
M. Miyamoto, Hitachi, Ltd. (Japan)
Toshimichi Shintani, Hitachi, Ltd. (Japan)
Kimio Nakamura, Hitachi, Ltd. (Japan)
Atsushi Kikukawa, Hitachi, Ltd. (Japan)
Sumio Hosaka, Hitachi, Ltd. (Japan)

Published in SPIE Proceedings Vol. 2338:
1994 Topical Meeting on Optical Data Storage
David K. Campbell; Martin Chen; Koichi Ogawa, Editor(s)

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