Fragile-to-Strong Transition in Al-Ni-M （M=La, Pr, Nd） Metallic Glasses  

作　　者：张春芝 胡丽娜 边秀房 岳远征 

机构地区：[1]Key Laboratory of Liquid Structure and Heredity of Materials (Ministry of Education), Shandong University, Jinan 250061 [2]Section of Chemistry, Aalborg University, DK-9000 Aalborg, Denmark

出　　处：《Chinese Physics Letters》2010年第11期156-158,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 50801041 and 50871062, the Shandong- Provincial Natural Science Foundation under Grant No Z2008F08, and the Research Fund for the Doctoral Program of Higher Education of China （200804221041）.

摘　　要：We study the dynamic behavior of marginal metallic glass-forming liquids Al-Ni-M （M=La, Pr, Nd） in terms of liquid fragility in high and low temperature regions. The liquids are extremely fragile above the liquidus temperature T liq, but become rather strong near the glass transition temperature Tg. The strength of the transition is inversely correlated with the fragility index at Tg. This relation is discussed in terms of potential energy landscape.We study the dynamic behavior of marginal metallic glass-forming liquids Al-Ni-M （M=La, Pr, Nd） in terms of liquid fragility in high and low temperature regions. The liquids are extremely fragile above the liquidus temperature T liq, but become rather strong near the glass transition temperature Tg. The strength of the transition is inversely correlated with the fragility index at Tg. This relation is discussed in terms of potential energy landscape.

关 键 词：Soft matter liquids and polymers Condensed matter: structural mechanical & thermal 

分 类 号：O614.813[理学—无机化学] TG139.8[理学—化学]