Temperature dependence of self-diffusion coefficient in liquid Hg and Sn: a modified hard-sphere description

被引：0

作者：

Yokoyama, I ^{[1
]}

Waseda, Y ^{[1
]}

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

来源：

HIGH TEMPERATURE MATERIALS AND PROCESSES | 2002年 / 21卷 / 04期

关键词：

dzugutov's scaling law; excess entropy; self-diffusion coefficient; hard-sphere model;

D O I：

10.1515/HTMP.2002.21.4.213

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Analytical expressions based on a modified hard-sphere model are presented for atomic diffusion in condensed matter. The temperature dependence of a hard-sphere diameter is essential to explain the experimental diffusion coefficient in liquid Hg and Sri. The formula proposed by Protopapas et al. /10/ works well at low temperatures but fails to describe the temperature dependence of a hard-sphere diameter as the temperature is increased. A universal reduced form obtained by Itami and Sugimura /4/ is better than Protopapas et al.'s formula at high temperatures.

引用

页码：213 / 216

页数：4

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