Helium diffraction study of the nucleation and growth of supported metal clusters

被引：16

作者：

Henry, CR

Meunier, M

机构：

[1] CRMC2-CNRS, Campus de Luminy, 13288 Marseille Cedex 09

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1996年 / 217卷

关键词：

metal clusters; helium; nucleation; growth kinetics;

D O I：

10.1016/S0921-5093(96)10289-6

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A new method for the in situ study of the nucleation and growth of metal clusters on an ionic substrate from vapor beam deposition is presented. It is based on the diffraction of helium atoms from the ionic substrate. From the attenuation of the first order diffraction peak during the growth of metal clusters the nucleation and growth kinetics are obtained. The only additional information needed is the final size distribution of the clusters which can be obtained from transmission electron microscopy. This method has been applied to the nucleation and growth of Pd clusters on MgO (100). With the same method but using the diffraction (specular peak) from the metal clusters it is possible to follow the evolution of the cluster shape during an annealing experiment.

引用

页码：239 / 243

页数：5

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