-
与以往试验及模拟计算方法不同,文章利用从头计算分子动力学研究了液态Ga, In及Ga-In合金的偏结构. 发现合金偏双体相关函数gGaGa(r), gInIn(r)的第一峰的位置分别与液态纯Ga和纯In的第一峰 位置接近, gGaIn(r)第一峰位置大于纯Ga和纯In第一峰位置的平均值,说明液态Ga-In合金中异类原子 呈现排斥倾向, Ga-Ga, In-In团簇更容易出现.在纯Ga, 纯In中占据最高含量的1311键对在液态合金中占主导 地位,说明Ga-Ga, In-In团簇共存于液态Ga-In合金中. Voronoi多面体分析发现,随着In含量的增加, 在Ga100-xInx(30 ≤x≤qslant 50 at.% ) 区域内, Ga原子周围主配位数出现突变,由12降为10,证明Ga-Ga和In-In团簇倾向于分离.该研究结果不同于 通常的微观不均匀模型,揭示了液态Ga-In合金中团簇分离的机制.Different from the previous experimental and simulating methods, ab initio molecular dynamics simulations are performed to investigate the partial structures of liquid Ga, In and Ga-In alloys. In liquid Ga-In alloys, the positions of first peaks in gGaGa(r) and gInIn(r) are close to those of the pure Ga and In, respectively, and the position of first peak in gGaIn(r) is larger than the average value of pure Ga and In, indicating that inhomogeneous atoms are prone to be repulsed and Ga-Ga and In-In clusters are easy to emerge in the system. The most popular 1311 pair bonds existing in liquid pure Ga and In are dominant in liquid alloys, proving that Ga-Ga and In-In clusters coexist in liquid Ga-In alloy. Through the Voronoi analysis, with In increasing, in the Ga100-xInx (30 ≤x≤50 at.%) region, the main coordination number around Ga atoms abruptly decrease from 12 to 10, proving that Ga-Ga and In-In clusters are prone to be separated. These results are different from those obtained from the micro-inhomogeneous model and reveal the mechanism of cluster separation in liquid Ga-In alloy.
-
Keywords:
- Ga-In alloys /
- liquid structure /
- ab initio molecular dynamics /
- clusters separation
[1] Il'inskii A G, Korobov V A, Kaban I G, Slyusarenko S I 1995 Phys. Met. 14 1040
[2] Il'inskii A G, Slyusarenko S I, Hoyer W, Hinz W 1992 Metallofizika 14 35
[3] Il'inskii A G, Kaban I G, Slyusarenko S I, Hoyer W 1993 Metallofizika 15 66
[4] Bukhalenko V V, Il'inskii A G, Romanova A V, Slyusarenko S I,Chen S S 1992 Metallofizika 14 42
[5] Il'inskii A G, Mikhajlova L E, Romanova A V, Rosenfeld A V,Hoyer W 1990 Magnetic and Electronic Properties of Materials(Volume 2) (Naukova Dumka)
[6] Kaban I, Halm Th, Hoyer W 2001 J. Non-Cryst Solids 288 96
[7] Il'inskii A G, Slyusarenko S, Slukhovskii O, Kaban I, Hoyer W 2002 Mater. Sci. Eng. A 325 98
[8] Il'inskii A G, Slyusarenko S, Slukhovskii O, Kaban I, Hoyer W 2002 J. Non-Cryst Solids 306 90
[9] Kaban I, HoyerW, Il'inskii A, Slukhovskii O, Slyusarenko S 2003J. Non-Cryst Solids 331 254
[10] Gruner S, Kaban I, Kleinhempel R, Hoyer W, Jovari P, DelaplaneR G 2005 J. Non-Cryst Solids 351 3490
[11] Roik O S, Samsonnikov O V, Kazimirov V P, Sokolskii V E 2009J. Mol. Liq. 145 129
[12] Egry I, Hennet L, Kehr M, Mathiak G, Panfilis S D, PozdnyakovaI, Zanghi D 2008 J. Chem. Phys. 129 064508
[13] Gu T K, Qin J Y, Xu C Y, Bian X F 2004 Phys. Rev. B 70 144204
[14] Tasci E S, Sluiter M H, Pasturel A, Jakse N 2010 Phys. Rev. B 81172202
[15] Qin J Y, Liu H, Gu T K, Bian X F 2009 J. Phys: Condens Matter 21 155106
[16] Gebhardt B, Halm T, Hoyer W 1995 J. Non-Cryst Solids 192-193306
[17] Jones R O, Gunnarsson O 1989 Rev. Mod. Phys. 61 689
[18] Phillips J C 1958 Phys. Rev. 112 685
[19] Yin M T, Cohen M L 1982 Phys. Rev. B 25 7403
[20] Wang Y, Perdew J 1991 Phys. Rev. B 44 13298
[21] Kresse G, Furthmüller J 1996 Comput. Mater. Sci. 6 15
[22] Kresse G, Furthmüller J 1996 Phys. Rev. B 54 11169
[23] Blöchl P E 1994 Phys. Rev. B 50 17953
[24] Kresse G, Joubert D 1999 Phys. Rev. B 59 1758
[25] Nose S 1984 J. Chem. Phys. 81 511
[26] Qin J Y, Gu T K, Yang L, Bian X F 2007 Appl. Phys. Lett. 90201909
[27] Qin J Y, Gu T K, Yang L 2009 J. Non-Cryst Solids 355 2333
[28] Faber T E, Ziman J M 1965 Phil. Mag. 11 153
[29] Qin J Y, Qin X B, Wang W W, Bian X F 2004 Transactions of Nonferrous Metals Society of China 14 1068
[30] Wang H R, Tian X L, Teng X Y, Shi Z Q, Ye Y F, Min G H, Qin J Y 2002 Chin. Phys. Lett. 19 233
[31] Vahvaselka K S 1980 Phys. Scr. 22 647
[32] Iida T, Guthrie R I L 1993 The Physical Properties of Liquid Metals(Oxford: Clarendon Press) p35
[33] Honeycutt J D, Andersen H C 1987 J. Phys. Chem. 91 4950
[34] Tsay S F, Wang S 1994 Phys. Rev. B 50 108
[35] Wu S Q,Wang C Z, Hao S G, Zhu Z Z, Ho K M 2010 Appl. Phys.Lett. 97 021901
[36] Qi L, Dong L F, Zhang S L, Ma M Z, Jing Q, Li G, Liu R P 2008 Comput. Mater. Sci. 43 732
[37] Luo W K, Ma E 2008 J. Non-Cryst Solids 354 945
-
[1] Il'inskii A G, Korobov V A, Kaban I G, Slyusarenko S I 1995 Phys. Met. 14 1040
[2] Il'inskii A G, Slyusarenko S I, Hoyer W, Hinz W 1992 Metallofizika 14 35
[3] Il'inskii A G, Kaban I G, Slyusarenko S I, Hoyer W 1993 Metallofizika 15 66
[4] Bukhalenko V V, Il'inskii A G, Romanova A V, Slyusarenko S I,Chen S S 1992 Metallofizika 14 42
[5] Il'inskii A G, Mikhajlova L E, Romanova A V, Rosenfeld A V,Hoyer W 1990 Magnetic and Electronic Properties of Materials(Volume 2) (Naukova Dumka)
[6] Kaban I, Halm Th, Hoyer W 2001 J. Non-Cryst Solids 288 96
[7] Il'inskii A G, Slyusarenko S, Slukhovskii O, Kaban I, Hoyer W 2002 Mater. Sci. Eng. A 325 98
[8] Il'inskii A G, Slyusarenko S, Slukhovskii O, Kaban I, Hoyer W 2002 J. Non-Cryst Solids 306 90
[9] Kaban I, HoyerW, Il'inskii A, Slukhovskii O, Slyusarenko S 2003J. Non-Cryst Solids 331 254
[10] Gruner S, Kaban I, Kleinhempel R, Hoyer W, Jovari P, DelaplaneR G 2005 J. Non-Cryst Solids 351 3490
[11] Roik O S, Samsonnikov O V, Kazimirov V P, Sokolskii V E 2009J. Mol. Liq. 145 129
[12] Egry I, Hennet L, Kehr M, Mathiak G, Panfilis S D, PozdnyakovaI, Zanghi D 2008 J. Chem. Phys. 129 064508
[13] Gu T K, Qin J Y, Xu C Y, Bian X F 2004 Phys. Rev. B 70 144204
[14] Tasci E S, Sluiter M H, Pasturel A, Jakse N 2010 Phys. Rev. B 81172202
[15] Qin J Y, Liu H, Gu T K, Bian X F 2009 J. Phys: Condens Matter 21 155106
[16] Gebhardt B, Halm T, Hoyer W 1995 J. Non-Cryst Solids 192-193306
[17] Jones R O, Gunnarsson O 1989 Rev. Mod. Phys. 61 689
[18] Phillips J C 1958 Phys. Rev. 112 685
[19] Yin M T, Cohen M L 1982 Phys. Rev. B 25 7403
[20] Wang Y, Perdew J 1991 Phys. Rev. B 44 13298
[21] Kresse G, Furthmüller J 1996 Comput. Mater. Sci. 6 15
[22] Kresse G, Furthmüller J 1996 Phys. Rev. B 54 11169
[23] Blöchl P E 1994 Phys. Rev. B 50 17953
[24] Kresse G, Joubert D 1999 Phys. Rev. B 59 1758
[25] Nose S 1984 J. Chem. Phys. 81 511
[26] Qin J Y, Gu T K, Yang L, Bian X F 2007 Appl. Phys. Lett. 90201909
[27] Qin J Y, Gu T K, Yang L 2009 J. Non-Cryst Solids 355 2333
[28] Faber T E, Ziman J M 1965 Phil. Mag. 11 153
[29] Qin J Y, Qin X B, Wang W W, Bian X F 2004 Transactions of Nonferrous Metals Society of China 14 1068
[30] Wang H R, Tian X L, Teng X Y, Shi Z Q, Ye Y F, Min G H, Qin J Y 2002 Chin. Phys. Lett. 19 233
[31] Vahvaselka K S 1980 Phys. Scr. 22 647
[32] Iida T, Guthrie R I L 1993 The Physical Properties of Liquid Metals(Oxford: Clarendon Press) p35
[33] Honeycutt J D, Andersen H C 1987 J. Phys. Chem. 91 4950
[34] Tsay S F, Wang S 1994 Phys. Rev. B 50 108
[35] Wu S Q,Wang C Z, Hao S G, Zhu Z Z, Ho K M 2010 Appl. Phys.Lett. 97 021901
[36] Qi L, Dong L F, Zhang S L, Ma M Z, Jing Q, Li G, Liu R P 2008 Comput. Mater. Sci. 43 732
[37] Luo W K, Ma E 2008 J. Non-Cryst Solids 354 945
计量
- 文章访问数: 7572
- PDF下载量: 545
- 被引次数: 0
下载:
