Cluster-size dependence of alloying behavior in gold clusters
Cluster-size dependence of alloying behavior in gold clusters
复制标题
金簇中合金化行为的簇尺寸依赖性
DOI：
10.1007/bf01426588
复制
发表时间：
1994
期刊：
影响因子：
--
通讯作者：
H. Mori
中科院分区：
文献类型：
--
作者：
H. Yasuda;H. Mori
Cluster-size dependence of alloying behavior in nm-sized atom clusters has been studied by transmission electron microscopy, using clusters in the Au-Cu system. It was revealed that occurrence of rapid spontaneous alloying becomes more difficult with increasing cluster size. In gold clusters of approximately 4 nm in the mean size, a rapid dissolution of copper atoms took place and homogeneously mixed Au-Cu alloy clusters were formed. In gold clusters of approximately 10 nm in the mean size, rapid alloying of copper took place only at a shell-shaped region beneath the free surface of individual clusters and pure gold was retained at the central region of clusters. In gold clusters of approximately 30 nm in the mean size, no rapid alloying of copper was induced. The ease with which spontaneous alloying takes place is discussed in terms of the lattice softening in atom clusters.
