A slope-theory approach to electrical probe recording on phase-change media

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A slope-theory approach to electrical probe recording on phase-change media

Please use this identifier to cite or link to this item: http://hdl.handle.net/10036/46881

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Title: A slope-theory approach to electrical probe recording on phase-change media
Author: Aziz, Mustafa M.
Wright, C. David
Citation: 97 (10), article 103537
Publisher: American Institute of Physics
Journal: Journal of Applied Physics
Date Issued: 2005
URI: http://hdl.handle.net/10036/46881
DOI: 10.1063/1.1904156
Links: http://dx.doi.org/10.1063/1.1904156 http://link.aip.org/link/?JAPIAU/97/103537/1
Abstract: A theoretical approach to predicting the spatial extent of the amorphous to crystalline transition region during the probe recording process on phase-change storage media is presented. The extent of this transition region determines the ultimate achievable linear density for data storage using phase-change materials. The approach has parallels with the slope theory used to find magnetic transition lengths in magnetic recording, and shows that the amorphous to crystalline transition length can be minimized by reducing the thickness of the phase-change layer, by minimizing lateral heat flow, and by maximizing the ratio of the activation energy for crystallization to the transition temperature Ec/Tt.
Type: Article
Description: Copyright © 2005 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Applied Physics 97 (2005) and may be found at http://link.aip.org/link/?JAPIAU/97/103537/1notes: The first paper to address theoretically the issue of writing resolution in electrical probe recording on phase-change media. The theory combined the thermal, kinetic, and electronic properties of the storage medium in an analytical framework to predict the ultimate writing resolutions of this technology. The theory also provided directions in material selection and design to increase the resolution and hence storage density of this new technology. The work led to invited presentations at on probe-based storage at the IEEE/IoP Magnetics Society Wohlfarth Lecture Meeting, London, April 2005 and at the Seagate Research Conclave, June 2007 at Sprintown, Northern Ireland.
Keywords: phase change materialscrystallisationamorphisationsurface phase transformationssemiconductor storagechalcogenide glasses
ISSN: 0021-8979


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