• Acta Physica Sinica
  • Vol. 69, Issue 4, 046401-1 (2020)
Ming Gao1, Yong-He Deng2、*, Da-Dong Wen2, Ze-An Tian3, He-Ping Zhao1, and Ping Peng3
Author Affiliations
  • 1College of Physics, Mechanical and Electrical Engineering, Jishou University, Jishou 416000, China
  • 2College of Science, Hunan Institute of Engineering, Xiangtan 411104, China
  • 3School of Materials Science and Engineering, Hunan University, Changsha 410083, China
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    DOI: 10.7498/aps.69.20190970 Cite this Article
    Ming Gao, Yong-He Deng, Da-Dong Wen, Ze-An Tian, He-Ping Zhao, Ping Peng. Evolution characteristics and hereditary mechanisms of clusters in rapidly solidified Pd82Si18 alloy [J]. Acta Physica Sinica, 2020, 69(4): 046401-1 Copy Citation Text show less
    Pair distribution functions g(r) for rapidly solidified of Pd82Si18 from 1300 to 300 K (ΔT =100 K): (a) The g(r)tot curve; (b) first peak zoom of g(r)tot curve; (c) second peak zoom of g(r)tot curve; (d) first peak zoom of g(r)Pd-Si and g(r)Pd-Pd curve.
    Fig. 1. Pair distribution functions g(r) for rapidly solidified of Pd82Si18 from 1300 to 300 K (ΔT =100 K): (a) The g(r)tot curve; (b) first peak zoom of g(r)tot curve; (c) second peak zoom of g(r)tot curve; (d) first peak zoom of g(r)Pd-Si and g(r)Pd-Pd curve.
    Average atomic potential energy of per atom in the simulated system as a function of temperature T during rapid solidification.
    Fig. 2. Average atomic potential energy of per atom in the simulated system as a function of temperature T during rapid solidification.
    Schematic diagram of BSAP and TTP with CTIM index of (10 2/1441 8/1551) and (9 3/1441 6/1551) (Red ball denote Si atom and gray balls denote Pd atoms).
    Fig. 3. Schematic diagram of BSAP and TTP with CTIM index of (10 2/1441 8/1551) and (9 3/1441 6/1551) (Red ball denote Si atom and gray balls denote Pd atoms).
    The temperature dependence of the number of typical basic clusters in Pd82Si18 alloys: (a) Canonical Kasper clusters; (b) distorted Kasper clusters.
    Fig. 4. The temperature dependence of the number of typical basic clusters in Pd82Si18 alloys: (a) Canonical Kasper clusters; (b) distorted Kasper clusters.
    Basic cluster heredity schematic map of BSAP: (a) Perfect heredity; (b) core heredity
    Fig. 5. Basic cluster heredity schematic map of BSAP: (a) Perfect heredity; (b) core heredity
    The heredity fractions in amorphous alloy Pd82Si18 from 810 K to 300 K.
    Fig. 6. The heredity fractions in amorphous alloy Pd82Si18 from 810 K to 300 K.
    Binding energies of several basic Si-centered clusters of amorphous alloy Pd82Si18 at 810 and 300 K depend on the distribution of clusters: (a) Binding energy distribution of basic Si-centered clusters at 800 K; (B) binding energy distribution of basic Si-centered clusters at 300 K; (c) distribution of average binding energy of basic Si-centered clusters at 800 and 300 K.
    Fig. 7. Binding energies of several basic Si-centered clusters of amorphous alloy Pd82Si18 at 810 and 300 K depend on the distribution of clusters: (a) Binding energy distribution of basic Si-centered clusters at 800 K; (B) binding energy distribution of basic Si-centered clusters at 300 K; (c) distribution of average binding energy of basic Si-centered clusters at 800 and 300 K.
    Binding energies of several optimized basic Si-centered clusters depend on the distribution of clusters: (a) EAM calculations; (b) first-principle calculations.
    Fig. 8. Binding energies of several optimized basic Si-centered clusters depend on the distribution of clusters: (a) EAM calculations; (b) first-principle calculations.
    Pattern of local charge density distribution: (a) Local charge density of Si-centered Pd10Si cluster; (b) local charge density of Si-centered Pd9Si cluster(White and red fonts in the figure represents atoms on the tangent plane).
    Fig. 9. Pattern of local charge density distribution: (a) Local charge density of Si-centered Pd10Si cluster; (b) local charge density of Si-centered Pd9Si cluster(White and red fonts in the figure represents atoms on the tangent plane).
    The density of states (DOS) diagrams of optimized basic Si-centered clusters: (a) The DOS of Pd9Si、Pd10Si and Pd11Si clusters; (b) zoom of the Fermi level in (a) diagram.
    Fig. 10. The density of states (DOS) diagrams of optimized basic Si-centered clusters: (a) The DOS of Pd9Si、Pd10Si and Pd11Si clusters; (b) zoom of the Fermi level in (a) diagram.
    810 K300 K(9 3/1441 6/1551)(9 1/1441 4/1551 4/1431)(10 2/1441 8/1551)(10 1/1441 5/1551 1/1541 3/1431)(11 1/1441 6/1551 2/1541 2/1431)(11 2/1441 8/1551 1/1661)Sum/%
    (9 3/1441 6/1551)6.9310.399.522.169.9638.96
    (9 1/1441 4/1551 4/1431)7.7516.677.363.109.6944.57
    (10 2/1441 8/1551)5.806.9710.121.4912.9437.32
    (10 1/1441 5/1551 1/1541 3/1431)5.715.9314.732.429.6738.46
    (11 1/1441 6/1551 2/1541 2/1431)6.494.5513.6410.3911.0446.11
    (11 2/1441 8/1551 1/1661)4.774.5617.0110.583.1140.03
    Sum(%)30.5228.9472.4447.9712.2853.30
    Table 1.

    The evolution fractions of several basic Si-centered clusters in amorphous alloy Pd82Si18 from 810 to 300 K.

    Pd82Si18合金从810 到300 K的几种基本Si原子为中心的团簇的演化分数

    Ming Gao, Yong-He Deng, Da-Dong Wen, Ze-An Tian, He-Ping Zhao, Ping Peng. Evolution characteristics and hereditary mechanisms of clusters in rapidly solidified Pd82Si18 alloy [J]. Acta Physica Sinica, 2020, 69(4): 046401-1
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