NEW DIFFUSION MECHANISM IN SOLIDS AT HIGH-TEMPERATURE

被引：25

作者：

DOAN, NV

ADDA, Y

机构：

[1] CEA-IRDI-DMECN-DTECH, Section de Recherches de Métallurgie Physique, Centre d'Etudes Nucléaires de Saclay, 91191, Gif sur Yvette, Cedex, France

来源：

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 1987年 / 56卷 / 02期

关键词：

COMPUTER SIMULATION - SOLIDS - Thermal Effects;

D O I：

10.1080/01418618708205166

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new atomic transport mechanism in solids at high temperature has been discovered by molecular dynamics computer simulation. It can be described as a ring sequence of atomic replacements induced by an unstable Frenkel pair. This mechanism could play an important role in solids where the atomic mobility is high enough (for example in superionic conductors or certain body-centered cubic metals) or is enhanced by irradiation. It suggests at the same time a new process for defect creation in crystalline solids based on unstable Frenkel pairs created in the vicinity of the surface.

引用

页码：269 / 283

页数：15

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