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Identification and tracking of different types of crystalline nucleiduring isothermal crystallization of amorphous Ag

Li Yuan Peng Ping

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Identification and tracking of different types of crystalline nucleiduring isothermal crystallization of amorphous Ag

Li Yuan, Peng Ping
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  • The isothermal crystallization of amorphous Ag is investigated by a molecular dynamics (MD) simulation, and the heredity and evolution of different types of crystalline clusters aretracked and analyzed by a reverse tracking method of atom trajectories with the help of cluster-type index method (CTIM) based on Honeycutt-Anderson (H-A) bond-type index. According to the difference in the type of crystalline cluster and the linkage mode, i.e., vertex-sharing (VS), edge-sharing (ES), face-sharing (FS) and intercross-sharing (IS), a cluster analysis method which can efficiently characterize fcc single-crystal, fcc poly-crystal and fcc hydrid-crystal, is proposed. That is, the IS-linkage of fcc basic clusters, i.e., a fcc medium range order, is defined as a fcc single-crystal cluster. The extended cluster of fccbasic clusterslinked by ISand FS modes is named fcc poly-crystal clusters. In the case of IS-linkages, if the majority of core atoms arefcc atoms, the extended cluster composed of fcc, hcp and bcc basic clusters will be regarded as a fcc hydrid-crystal cluster. Moreover, a structural analysis method of critical nuclei distinguishing embryosis also developed in terms of the hereditary characteristics of various crystalline clusters. In this scheme, the extended cluster which has only transient heredity and no continuous heredity is defined as an embryo, while it will be named nuclei if part of core atoms in extended clusters can keep cluster type of atoms unchanged and be continuously passed down in the early stage of crystallization. Thus, corresponding to the onset time/temperature of continuous heredity, the critical nuclei of fcc singe-crystals, fcc poly-crystals and fcc hybrid-crystals can be identified and characterized. It is found that the nuclei of fcc crystalsemerge after the steep drop of total energy of system and before the abrupt increase of sizesof tracked clusters. And regardless of critical sizes or geometric configurations, an evident difference exists among fcc singe-crystal, hybrid-crystal clusters and fcc poly-crystal clusters, of which the fcc single-crystal nucleus is the smallest (~1.6 nm ×1.0 nm × 1.1 nm), followed by poly-crystal nucleus (~1.7 nm × 1.0 nm × 1.6 nm) and hydrid-crystal nucleus (~2.3 nm × 2.0 nm × 2.4 nm) in sequence. There are a few hcp and bcc atoms at surfaces, i.e. shells, of single-crystal and poly-crystal nucleus, but neither hcp nor bcc atom can be detected at the shell of fcc hydrid-crystal nucleus. And theconfiguration of fcc single-crystal, poly-crystal and hydrid-crystal critical nuclei are all non-spherical.
      Corresponding author: Peng Ping, ppeng@hnu.edu.cn
    • Funds: Project supported by the National Natural Science Foundation of China (Grant No. 51871096).
    [1]

    Jiang Y H, Zou J T, Xiao P, Liang S H, Liu F, Gu B 2018 J. Non-Cryst. Solids 481 608Google Scholar

    [2]

    CelikA F, Kazanc S 2013 Physica B 63

    [3]

    Hoang V V, Long N T, Son D N 2014 Comp. Mater. Sci. 95 491Google Scholar

    [4]

    Zhou K, Wang H P, Chang J, Wei B 2015 Chem. Phys. Lett. 639 105Google Scholar

    [5]

    Gasser U, Weeks E R, Schofield A, Pusey P N, Weitz D A 2001 Science 292 258Google Scholar

    [6]

    Lee B S, Burr G W, Shelby R M, Raoux S, Rettner C T, Bogle S N, Darmawikarta K, Bishop S G, Abelson J R 2009 Science 326 980Google Scholar

    [7]

    Lechner W, Dellago C 2008 J. Chem. Phys. 129 114707Google Scholar

    [8]

    Brostow W, Chybicki M, Laskowski R, Rybicki J 1998 Phys. Rev. B 57 13448Google Scholar

    [9]

    文大东, 彭平, 蒋元祺, 田泽安, 刘让苏 2013 物理学报 62 196101Google Scholar

    Wen D D, Peng P, Jiang Y Q, Tian Z A, Liu R S 2013 Acta Phys. Sin. 62 196101Google Scholar

    [10]

    Kelton K F 1991 Solid. State. Phys. 45 75Google Scholar

    [11]

    Liu J, Zhao J Z, Hu Z Q 2007 Mat. Sci. Eng. A 452 103

    [12]

    Honeycutt J D, Andersen H C 1987 J. Phys. Chem. 91 4950Google Scholar

    [13]

    Wu Z W, Li M Z, Wang W H, Song W J, Liu K X 2013 J. Chem. Phys. 138 620

    [14]

    Li R, Wu Y, Xiao J 2014 J. Chem. Phys. 140 046102

    [15]

    Zhou L L, Liu R S, Tian Z A, Liu H R, Hou Z Y, Peng P 2016 Sci. Rep. 6 31653Google Scholar

    [16]

    Yu D Q, Chen M, Yang H, Lü Y J 2009 Phil. Mag. Lett. 89 44Google Scholar

    [17]

    Zhang S L, Wang L M, Zhang X Y, Qi L, Zhang S H, Ma M Z, Liu R P 2015 Sci. Rep. 5 8590Google Scholar

    [18]

    Bai Y W, Bian X F, Qin J Y, Hu L N, Yang J F, Zhang K, Zhao X L, Zhang S, Huang Y Y, Yang C C 2014 J. Appl. Phys. 115 063106Google Scholar

    [19]

    Kalikmanov V I 2013 Nucleation Theory (Vol. 860)(Dordrecht: Springe) pp17-41

    [20]

    Plimpton S 1995 Fast Parallel Algorithms for Short-range Molecular Dynamics (Academic Press Professional, Inc.) pp1−19

    [21]

    Yang Z Y, Lu Z X, Zhao Y P 2009 Comp. Mater. Sci. 46 142Google Scholar

    [22]

    Lei Y W, Sun X R, Zhou R L, Bo Z 2018 Comp. Mater. Sci. 150 1Google Scholar

    [23]

    Foiles S M, Baskes M I, Daw M S 1986 Phys. Rev. B 33 7983Google Scholar

    [24]

    Martyna G J, Tobias D J, Klein M L 1994 J. Chem. Phys. 101 4177Google Scholar

    [25]

    Verlet L 1967 Health Phys. 22 79

    [26]

    邓永和, 文大东, 彭超, 韦彦丁, 赵瑞, 彭平 2016 物理学报 65 066401Google Scholar

    Deng Y H, Wen D D, Peng C, Wei Y D, Zhao R, Peng P 2016 Acta Phys. Sin. 65 066401Google Scholar

    [27]

    Zhou L L, Yang R Y, Tian Z A, Mo Y F, Liu R S 2017 J. Alloy. Compd. 690 633Google Scholar

    [28]

    Sun B, Sun Z W, Ouyang W Z, Xu S H 2014 J.Chem. Phys. 140 134904Google Scholar

    [29]

    Zhang H T, Mo Y F, Liu R S, Tian Z, Liu H R, Hou Z Y, Zhou L L, Liang Y C, Peng P 2018 Mater. Res. Express 5 036507Google Scholar

    [30]

    Hou Z Y, Liu L X, Liu R S, Tian Z A, Wang J G 2010 J. Appl. Phys. 107 629

    [31]

    Lad K N, Jakse N, Pasturel A 2012 J. Chem. Phys. 136 3313

    [32]

    Wen D D, Peng P, Jiang Y Q, Liu R S 2013 J. Non-Crys. Solids 378 61Google Scholar

    [33]

    Hou Z Y, Liu L X, Liu R S, Tian Z A, Wang J G 2010 Chem. Phys. Lett. 491 172Google Scholar

    [34]

    Wen D D, Peng P, Jiang Y Q, Tian Z A, Liu R S, Dong K J 2014 J. Non-Cryst. Solids 388 75Google Scholar

    [35]

    Streitz F H, Glosli J N, Patel M V 2006 Phys. Rev. Lett. 96 225701Google Scholar

  • 图 1  (a)体系平均每个原子能量E与(b)双体分布函数g(r)随弛豫时间t的变化

    Figure 1.  (a) Systemic total energy per atom E and (b) pair distribution function g(r) as a function of relaxation time t.

    图 2  (a)典型晶体原子数目Ntotal随弛豫时间t的变化; (b)特征时间节点三类晶体原子的空间分布(红色、绿色和蓝色球分别表示fcc, hcp和bcc原子)

    Figure 2.  (a) Variation of number Ntotal of various crystalline atoms with relaxation time t; (b) their spatial distributions at several special times, where red, green and blue balls represent fcc, hcp and bcc atoms, respectively.

    图 3  fcc基本原子团的四种连接方式示意图 (红色、灰色和橙色球分别表示中心原子、表面原子和共享原子)

    Figure 3.  Schematic diagram of VS-, ES-, FS- and IS-linkages between two basic fcc clusters, where red, gray and orange balls represent core atoms, shell atoms and shared atoms, respectively.

    图 4  三种fcc扩展晶体团簇及其芯部原子示意图(红色、绿色和灰色球分别表示fcc原子、hcp原子和其他表面原子, 芯原子间实线表示IS联结, 虚线表示FS联结) (a)单晶团簇; (b)多晶团簇; (c)混晶团簇

    Figure 4.  Schematic diagram of three kinds of fcc extended clusters and their core atoms. Red, green and gray balls represent fcc, hcp, and other shell atoms, respectively. The solid line and dot line between core atoms represent IS-linkages and FS-linkages between fcc basic clusters, respectively. (a) Single-crystal cluster; (b) poly-crystal cluster; (c) hydrid-crystal cluster.

    图 5  被追踪fcc团簇芯原子数目n(t)及其可遗传分数f(t)随弛豫时间t的变化

    Figure 5.  Number of core atoms n(t) and heritable fraction f(t) of traced fcc extended clusters as a function of relaxation time t.

    图 6  fcc单晶团簇芯原子的遗传与演化示意图. 左边为瞬态遗传, 右边为连续遗传, 深红色与浅红色球分别表示在两种遗传模式中可遗传和不具有遗传性的原子

    Figure 6.  Schematic diagram of heredity and evolution of core atoms in the traced single-crystal cluster. Dark and light red balls represent heritable atoms and other atoms without heredity in transient and continuous heredities, respectively.

    图 7  三种类型fcc临界晶核示意图 (a)单晶核; (b)多晶核; (c)混晶核(红色、绿色、蓝色和灰色球分别表示fcc, hcp, bcc和其他表面原子)

    Figure 7.  Schematic diagram of critical crystalline nuclei and their core atoms. Red, green, blue and gray balls denote fcc, hcp, bcc and other shell atoms, respectively. (a) Single-crystal; (b) poly-crystal; (c) hydrid-crystal.

    表 1  被追踪团簇在不同弛豫时间t的芯原子总数n(t)、可遗传至下一个时刻的原子数目ns(t)、可连续遗传的原子数目nc(t)及其中的IS和FS联结数lISc(t)和lFSc(t)

    Table 1.  The number of core atoms n(t), the number ns(t) and nc(t) of heritable core atoms in transient and continuous heredities at relaxation time t as well as the number lISc(t) and lFSc(t) of IS- and FS-linkages between heritable core atoms in the continuous heredity mode.

    Single-crystalPoly-crystalHydrid-crystal
    t/psnnsnclIScnnsnclISclFScnnsnclISc
    2005355134
    190383131824131318201175656116
    1803825223839252238066423352
    1703619132036191320078271721
    1603624111539241115069351315
    1502720882820881522698
    1403021773021771703487
    1303018653018651653465
    12014931169311371131
    11014710177100291110
    10022910249100371310
    902113102313100522010
    801812102012100351610
    702711103113100411810
    602271024710032910
    5018910189100201010
    401370013700014700
    3021007200011200
    DownLoad: CSV
  • [1]

    Jiang Y H, Zou J T, Xiao P, Liang S H, Liu F, Gu B 2018 J. Non-Cryst. Solids 481 608Google Scholar

    [2]

    CelikA F, Kazanc S 2013 Physica B 63

    [3]

    Hoang V V, Long N T, Son D N 2014 Comp. Mater. Sci. 95 491Google Scholar

    [4]

    Zhou K, Wang H P, Chang J, Wei B 2015 Chem. Phys. Lett. 639 105Google Scholar

    [5]

    Gasser U, Weeks E R, Schofield A, Pusey P N, Weitz D A 2001 Science 292 258Google Scholar

    [6]

    Lee B S, Burr G W, Shelby R M, Raoux S, Rettner C T, Bogle S N, Darmawikarta K, Bishop S G, Abelson J R 2009 Science 326 980Google Scholar

    [7]

    Lechner W, Dellago C 2008 J. Chem. Phys. 129 114707Google Scholar

    [8]

    Brostow W, Chybicki M, Laskowski R, Rybicki J 1998 Phys. Rev. B 57 13448Google Scholar

    [9]

    文大东, 彭平, 蒋元祺, 田泽安, 刘让苏 2013 物理学报 62 196101Google Scholar

    Wen D D, Peng P, Jiang Y Q, Tian Z A, Liu R S 2013 Acta Phys. Sin. 62 196101Google Scholar

    [10]

    Kelton K F 1991 Solid. State. Phys. 45 75Google Scholar

    [11]

    Liu J, Zhao J Z, Hu Z Q 2007 Mat. Sci. Eng. A 452 103

    [12]

    Honeycutt J D, Andersen H C 1987 J. Phys. Chem. 91 4950Google Scholar

    [13]

    Wu Z W, Li M Z, Wang W H, Song W J, Liu K X 2013 J. Chem. Phys. 138 620

    [14]

    Li R, Wu Y, Xiao J 2014 J. Chem. Phys. 140 046102

    [15]

    Zhou L L, Liu R S, Tian Z A, Liu H R, Hou Z Y, Peng P 2016 Sci. Rep. 6 31653Google Scholar

    [16]

    Yu D Q, Chen M, Yang H, Lü Y J 2009 Phil. Mag. Lett. 89 44Google Scholar

    [17]

    Zhang S L, Wang L M, Zhang X Y, Qi L, Zhang S H, Ma M Z, Liu R P 2015 Sci. Rep. 5 8590Google Scholar

    [18]

    Bai Y W, Bian X F, Qin J Y, Hu L N, Yang J F, Zhang K, Zhao X L, Zhang S, Huang Y Y, Yang C C 2014 J. Appl. Phys. 115 063106Google Scholar

    [19]

    Kalikmanov V I 2013 Nucleation Theory (Vol. 860)(Dordrecht: Springe) pp17-41

    [20]

    Plimpton S 1995 Fast Parallel Algorithms for Short-range Molecular Dynamics (Academic Press Professional, Inc.) pp1−19

    [21]

    Yang Z Y, Lu Z X, Zhao Y P 2009 Comp. Mater. Sci. 46 142Google Scholar

    [22]

    Lei Y W, Sun X R, Zhou R L, Bo Z 2018 Comp. Mater. Sci. 150 1Google Scholar

    [23]

    Foiles S M, Baskes M I, Daw M S 1986 Phys. Rev. B 33 7983Google Scholar

    [24]

    Martyna G J, Tobias D J, Klein M L 1994 J. Chem. Phys. 101 4177Google Scholar

    [25]

    Verlet L 1967 Health Phys. 22 79

    [26]

    邓永和, 文大东, 彭超, 韦彦丁, 赵瑞, 彭平 2016 物理学报 65 066401Google Scholar

    Deng Y H, Wen D D, Peng C, Wei Y D, Zhao R, Peng P 2016 Acta Phys. Sin. 65 066401Google Scholar

    [27]

    Zhou L L, Yang R Y, Tian Z A, Mo Y F, Liu R S 2017 J. Alloy. Compd. 690 633Google Scholar

    [28]

    Sun B, Sun Z W, Ouyang W Z, Xu S H 2014 J.Chem. Phys. 140 134904Google Scholar

    [29]

    Zhang H T, Mo Y F, Liu R S, Tian Z, Liu H R, Hou Z Y, Zhou L L, Liang Y C, Peng P 2018 Mater. Res. Express 5 036507Google Scholar

    [30]

    Hou Z Y, Liu L X, Liu R S, Tian Z A, Wang J G 2010 J. Appl. Phys. 107 629

    [31]

    Lad K N, Jakse N, Pasturel A 2012 J. Chem. Phys. 136 3313

    [32]

    Wen D D, Peng P, Jiang Y Q, Liu R S 2013 J. Non-Crys. Solids 378 61Google Scholar

    [33]

    Hou Z Y, Liu L X, Liu R S, Tian Z A, Wang J G 2010 Chem. Phys. Lett. 491 172Google Scholar

    [34]

    Wen D D, Peng P, Jiang Y Q, Tian Z A, Liu R S, Dong K J 2014 J. Non-Cryst. Solids 388 75Google Scholar

    [35]

    Streitz F H, Glosli J N, Patel M V 2006 Phys. Rev. Lett. 96 225701Google Scholar

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Publishing process
  • Received Date:  13 December 2018
  • Accepted Date:  14 February 2019
  • Available Online:  23 March 2019
  • Published Online:  05 April 2019

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