Loosening of the structure in a mixed alkali glass

被引：17

作者：

Habasaki, J

Hiwatari, Y

机构：

[1] Tokyo Inst Technol, Yokohama, Kanagawa 2268502, Japan

[2] Kanazawa Univ, Kanazama 9201192, Japan

来源：

PHYSICAL REVIEW E | 1998年 / 58卷 / 04期

关键词：

D O I：

10.1103/PhysRevE.58.5111

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

It is known that both loosening of glass structure and reduction of ionic diffusion coefficient occur in the mixed alkali system. We have performed molecular dynamics simulations of the mixed alkali system and have observed both characteristics in different time regions. A large decrease in the ionic diffusion coefficient is due to the interception of the jump where the jump path keeps its characteristics. The contribution of accelerated dynamics due to cooperative jumps decreases in such paths. On the other hand, in longer time regions, the motion of the framework has been found to accompany the small number of jump events of alkali metal ions to unlike ion sites. [S1063-651X(98)03210-3].

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收藏

页码：5111 / 5114

页数：4

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