物理学报2012，Vol.61Issue(13)：95-101,7.
超细Pt纳米线结构和熔化行为的分子动力学模拟研究
Structures and melting behaviors of ultrathin platinum nanowires
摘要
Abstract
The amorphous-like structures and melting behaviors of ultrathin platinum nanowires are studied by EAM potential by using em- pirical molecular-dynamic simulation and the dependence of nanowire melting temperature pm soze os pntaomed. When the Lindeman criterion is 0.03, we find that the melting temperature for Pt nanowires is well consistent with the result obtained from the potential energy. Through comparing the Lindemann indexes on each shell, the thermal stability is studied. The results indicate that melting of the cylindrical helical structures starts from the interior atoms and that of the bulklike rectangular structure starts from the surface. We also observe the positions of the atoms at different temperatures to obtain the atomic diffusion and mobility.关键词
Pt纳米线/奇异结构/熔化行为/分子动力学模拟Key words
platinum nanowires/amorphous-like structures/melting behavior/molecular dynamic simulations分类
信息技术与安全科学引用本文复制引用
夏冬,王新强..超细Pt纳米线结构和熔化行为的分子动力学模拟研究[J].物理学报,2012,61(13):95-101,7.
