How superheated crystals melt

被引:102
作者
Forsblom, M [1 ]
Grimvall, G [1 ]
机构
[1] Royal Inst Technol, AlbaNova Univ Ctr, Dept Phys, SE-10691 Stockholm, Sweden
关键词
D O I
10.1038/nmat1375
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The melting of superheated crystalline solids through the penetration of intense radiation within at a temperature above the equilibrium melting temperature was investigated. The atomistic simulations, relevant for aluminum, was used to show that the thermal fluctuation initiating melting is an aggregate typically with 6-7 interstitials and 3-4 vacancies. Vacancy-interstital pairs were created through thermal fluctuation and interstitial-vacancy pairs were created close to the interstitial aggregate. It was found that when a defect aggregate contains more than about 10 point defects, it usually grows rapidly and irreversibly.
引用
收藏
页码:388 / 390
页数:3
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