High-temperature liquid-liquid structure transition in liquid Sn-Bi alloys: Experimental evidence by electrical resistivity method

被引：42

作者：

Li, Xian-Fen ^{[1
]}

Zu, Fang-Qiu ^{[1
]}

Ding, Hou-Fu ^{[1
]}

Yu, Jin ^{[1
]}

Liu, Lan-Jun ^{[1
]}

Xi, Yun ^{[1
]}

机构：

[1] Hefei Univ Technol, Coll Mat Sci & Engn, Hefei 230009, Peoples R China

来源：

PHYSICS LETTERS A | 2006年 / 354卷 / 04期

基金：

中国国家自然科学基金;

关键词：

liquid Sn-Bi alloy; electrical resistivity; liquid-liquid structure transition;

D O I：

10.1016/j.physleta.2006.01.058

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The electrical resistivity of liquid Sn-Bi alloys has been investigated as a function of temperature by the DC four-probe technique. Obvious turning point is observed on resistivity-temperature (rho-T) curve of different Sn-Bi alloy, while the resistivity increases linearly with temperature increasing before the turning point. Moreover, different composition alloy shows different turning temperature on rho-T curve. Since resistivity is one of the physical properties sensitive to structure, its discontinuous alteration with temperature reveals the liquid-liquid structure transition in the Sn-Bi melts. Furthermore, comparing the heating rho-T curve with the cooling one of the eutectic alloy Sn43Bi57, it is found that the possible structure transition is irreversible. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：325 / 329

页数：5