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Scanning Probe Microscope Observation of Recorded Marks in Phase Change Disks

Published online by Cambridge University Press:  02 February 2002

Takashi Kikukawa  and
Hajime Utsunomiya
Takashi Kikukawa*
Affiliation:
Data Storage Technology Center, TDK Corporation, TDK Chikumagawa, The 1st Technical Center, 462-1, Otai, Saku, Nagano 385-0009, Japan
Hajime Utsunomiya
Affiliation:
Data Storage Technology Center, TDK Corporation, TDK Chikumagawa, The 1st Technical Center, 462-1, Otai, Saku, Nagano 385-0009, Japan
*
*Corresponding author
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Abstract

This is the first report on observation of phase change recorded marks by use of the scanning probe microscope (SPM). The amorphous mark and crystalline blank were clearly observed by surface potential mode (SPoM) that visualized the surface potential difference among phases or materials. SPoM observation has an advantage over conventional transmission electron microscope (TEM) observation in that the sample preparation is much easier, and that amorphous mark and crystalline blank are clearly distinguished. The possibility of a novel readout method of phase change disks, and the possibility of the novel medium with a surface potential detection method are also proposed.

Keywords

phase-change diskamorphous marktransmission electron microscopyscanning probe microscopysurface potential modenovel readout system
Type
Research Article
Information
Microscopy and Microanalysis , Volume 7 , Issue 4 , July 2001 , pp. 363 - 367
Copyright
Copyright © Microscopy Society of America 2001

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