分子动力学结合不同势研究Ir团簇熔化性质

邱宇; 段海明

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分子动力学结合不同势研究Ir团簇熔化性质

更新时间：2026-01-21

- 分子动力学结合不同势研究Ir团簇熔化性质
- Journal of Xinjiang University (Natural Science Edition in Chinese and English) Vol. 111, Issue 3, Pages: 308-313(2008)
- 作者机构：
  
  新疆大学物理科学与技术学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： O469
- Published：2008
- 稿件说明：
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[1]邱宇,段海明.分子动力学结合不同势研究Ir团簇熔化性质[J].新疆大学学报(自然科学版),2008,No.111(03):308-313+318.

邱宇, 段海明. 分子动力学结合不同势研究Ir团簇熔化性质[J]. Journal of Xinjiang University (Natural Science Edition in Chinese and English), 2008, 111(3): 308-313.
[1]邱宇,段海明.分子动力学结合不同势研究Ir团簇熔化性质[J].新疆大学学报(自然科学版),2008,No.111(03):308-313+318. DOI：

邱宇, 段海明. 分子动力学结合不同势研究Ir团簇熔化性质[J]. Journal of Xinjiang University (Natural Science Edition in Chinese and English), 2008, 111(3): 308-313. DOI：

摘要

采用Gupta势和Sutton-Chen势运用分子动力学方法研究了Irn(n=13

147)团簇的熔化行为.结果表明:对于所研究尺寸团簇

两种不同势给出了完全相同的基态几何结构.两种势给出的铱团簇熔点随团簇尺寸的变化关系基本一致、预熔化温度区间随团簇尺寸的变化关系完全一致.对于小团簇(Ir13、Ir14)两类势均表现出比热峰值相对于均方根键长涨落滞后的现象.

Abstract

The melting properties of Irn(n=13

147)clusters are studied by using molecular dynamics simulations with two different potentials: the Gupta potential and the Sutton-Chen potential. Same ground state geometrical structures are obtained for both potentials. Variations of melting temperature with cluster size of the two different potentials are consistent with each other

and variations of pre-melting temperature interval with cluster size are exactly the same for both potentials. For the small clusters (Ir13

Ir14)

both potentials show that the appearance of the maximum of the heat capacity curve is delayed from the rapid change of the Lindemann index.

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references

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