期刊
APPLIED PHYSICS LETTERS
卷 103, 期 5, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4817251
关键词
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资金
- National Natural Science Foundation of China [51271006]
- Beijing Municipal Natural Science Foundation [2132012]
- General Project of Beijing Municipal Education Commission [KM201210005020]
- Fund of the State Key Laboratory of Solidification Processing in NWPU [SKLSP201205]
- Basic Research Fund in BJUT [X4101011201101]
Three-dimensional finite element method simulation and experimental investigation were employed to study the fast crystallization mechanism of Ge2Sb2Te5 phase-change alloy films induced by a short Gaussian laser pulse. A crystallization mechanism was proposed which took into account the roles of heating and cooling rates on crystallization of the phase-change materials. Microstructure characteristics of crystallization, primarily attributed to inherent material properties and temperature field, were discussed. The present study not only unveils the crystallization mechanism induced by laser radiance but also distinguishes the roles of the ultrahigh heating/cooling rate for the phase transition. (C) 2013 AIP Publishing LLC.
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