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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 39, Iss. 35 — Dec. 10, 2000
  • pp: 6695–6701

Dynamic Theory of Crystallization in Ge2Sb2.3Te5 Phase-Change Optical Recording Media

Ewan M. Wright, Pramod K. Khulbe, and Masud Mansuripur  »View Author Affiliations


Applied Optics, Vol. 39, Issue 35, pp. 6695-6701 (2000)
http://dx.doi.org/10.1364/AO.39.006695


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Abstract

We develop a theory of the crystallization dynamics of Ge2Sb2.3Te5 thin films that shows good qualitative agreement with experimental reflectivity results from a two-laser static tester. The theory is adapted from the nucleation theory of liquid droplets from supersaturated vapor and elucidates the physics underlying the amorphous-to-crystalline phase transformation under short-pulse excitation. In particular, the theory provides a physical picture in which crystalline islands, or basic embryos, are thermally activated in the amorphous material and subsequently grow as stable nuclei are formed.

© 2000 Optical Society of America

OCIS Codes
(210.0210) Optical data storage : Optical data storage
(210.4590) Optical data storage : Optical disks
(210.4770) Optical data storage : Optical recording
(210.4810) Optical data storage : Optical storage-recording materials

Citation
Ewan M. Wright, Pramod K. Khulbe, and Masud Mansuripur, "Dynamic Theory of Crystallization in Ge2Sb2.3Te5 Phase-Change Optical Recording Media," Appl. Opt. 39, 6695-6701 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-35-6695

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