Open Access
ARTICLE
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.
Keywords
Cite This Article
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.