摘要Exploring nature of liquid structures and properties is becoming more interesting in various fundamental and applied fields. With different resorts including the resistivity method, temperature-induced liquid--liquid structure transitions (TI-LLST) have been suggested and verified to occur in some liquid alloys, while the reversibility of TI-LLST has rarely been examined as yet. Unlike some other investigated liquid alloys, here we show that electrical resistivity of Pb26Sn42Bi32 melt exhibit an anomalous change in the first heating run and a reversible change in the following cooling and heating cycles. Taking account of the structural sensitivity of electrical resistivity, the abnormal patterns suggest two sorts of TI-LLST that are irreversible and reversible in the liquid ternary alloy, respectively. This interesting phenomenon together with other growing evidence imply that liquid structures and their change characteristics are multiform and complex.
Abstract：Exploring nature of liquid structures and properties is becoming more interesting in various fundamental and applied fields. With different resorts including the resistivity method, temperature-induced liquid--liquid structure transitions (TI-LLST) have been suggested and verified to occur in some liquid alloys, while the reversibility of TI-LLST has rarely been examined as yet. Unlike some other investigated liquid alloys, here we show that electrical resistivity of Pb26Sn42Bi32 melt exhibit an anomalous change in the first heating run and a reversible change in the following cooling and heating cycles. Taking account of the structural sensitivity of electrical resistivity, the abnormal patterns suggest two sorts of TI-LLST that are irreversible and reversible in the liquid ternary alloy, respectively. This interesting phenomenon together with other growing evidence imply that liquid structures and their change characteristics are multiform and complex.
[1] Shen R R, Zu F Q et al 2006 Physica Scripta 73 184 [2] Zu F Q, Zhu Z G et al 2001 Phys. Rev. B 64 180203 [3] Li X F, Zu F Q, Ding H F, Yu J, Liu L J, Li Q and Xi Y 2005 Physica B: Condensed Matter 358 126 [4] Zu F Q, Zhu Z G et al 2002 Phys. Rev. Lett. 89 125505 [5] Wang L, Bian X F and Liu J T 2004 Phys. Lett. A 326429 [6]KabanIet al 2007 J. Non-Crystal. Solids 353 1979 [7] Xi Y, Zu F Q, Li X F et al 2004 Phys. Lett. A 329 221 [8] Plevachuka Y, Sklyarchuka V, Yakymovycha A, Willersb B, Eckertb S2005 J. Alloys Compounds 394 63 [9] Zu F Q, Zhu Z G et al 2001 J. Phys. Condens. Matter 13 11435 [10] Zu F Q, Li X F, Guo L J et al 2004 Phys. Lett. A 324472 [11]Zhu Z G, Zu F Q, Guo L J et al 2004 Mater. Sci. Eng. A 370 427 [12] Wang L and Liu J T 2004 Phys. Lett. A 328 241 [13] Bian X F, Zhang J X, Jia Y B et al 2005 Chin. Phys.Lett. 22 644 [14] Neumann H and Mikula A 2002 J. Non-Crystal. Solids 312-314 30 [15] Katayama Y et al 2004 Science 306 848 [16] Mishima O and Stanley H E 1998 Nature 392 164 [17] Katayama Y et al 2000 Nature 403 170 [18] Cheng S J, Wang W M, Bian X F et al 2004 Phys. Lett. A 331 387
2008, Vol. 25 
