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Size and Composition Dependence of the Frozen Structures in Co-Based Bimetallic Clusters

Guojian Li1, Qiang Wang1, Yongze Cao1, Jiaojiao Du1, Jicheng He1

1 Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, Shenyang 110004, China

Structural Longevity 2011, 6(3), 145-154. https://doi.org/10.3970/sl.2011.006.145

Abstract

This paper studies the size-dependent freezing of Co, Co-Ni, and CoCu clusters by using molecular dynamics with a general embedded atom method. There is size effect occurs in these three types of clusters. The clusters with large sizes always freeze to form their bulk-like structures. However, the frozen structures for small sizes are generally related to their compositions. The icosahedral clusters are formed for Co clusters (for ≤3.2 nm diameter) and also for Co-Ni clusters but at a larger size range (for ≤4.08 nm). Upon Co-Cu clusters, decohedral structure is obtained for small size (for 2.47 nm). The released energy induced the structural transformation plays a key role in the frozen structures. These results indicate that the preformed clusters with special structures can be tuned by controlling their compositions and sizes.

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APA Style
Li, G., Wang, Q., Cao, Y., Du, J., He, J. (2011). Size and composition dependence of the frozen structures in co-based bimetallic clusters. Structural Longevity, 6(3), 145-154. https://doi.org/10.3970/sl.2011.006.145
Vancouver Style
Li G, Wang Q, Cao Y, Du J, He J. Size and composition dependence of the frozen structures in co-based bimetallic clusters. Structural Longevity . 2011;6(3):145-154 https://doi.org/10.3970/sl.2011.006.145
IEEE Style
G. Li, Q. Wang, Y. Cao, J. Du, and J. He "Size and Composition Dependence of the Frozen Structures in Co-Based Bimetallic Clusters," Structural Longevity , vol. 6, no. 3, pp. 145-154. 2011. https://doi.org/10.3970/sl.2011.006.145



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