Dynamic theory of crystallization in Ge2Sb2.3Te5 phase-change optical recording media

被引：22
|
作者：
Wright, EM [1 ]
Khulbe, PK [1 ]
Mansuripur, M [1 ]
机构：
[1] Univ Arizona, Ctr Opt Sci, Tucson, AZ 85721 USA
来源：
APPLIED OPTICS | 2000年 / 39卷 / 35期
关键词：
D O I：
10.1364/AO.39.006695
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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. (C) 2000 Optical Society of America OCIS codes: 210.0210, 210.4590, 210.4770, 210.4810.
引用
收藏
页码：6695 / 6701
页数：7
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