Effect of the interface structure on the high-temperature morphology of supported metal clusters

被引：59

作者：

Graoui, H. ^{[1
]}

Giorgio, S. ^{[1
]}

Henry, C.R. ^{[1
]}

机构：

[1] Centre de Recherche sur les Mécanismes de la Croissance Cristalline, Laboratoire Associé aux Universités d'Aix Marseille 2 et 3 (CNRS), Campus de Luminy, Case 913, 13288 Marseille Cédex 9, France

来源：

Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties | 2001年 / 81卷 / 11 SPEC.期

关键词：

D O I：

10.1080/13642810110079908

中图分类号：

学科分类号：

摘要：

The morphology of Pd clusters prepared by ultrahigh-vacuum condensation or wet impregnation on MgO and the structure of the interfaces are studied by weak-beam dark-field and high-resolution electron microscopy, according to the particle sizes. The shapes are stable when the particles are annealed at increasing temperature, they are close to the equilibrium forms. Their adhesion energy with the substrate is experimentally deduced from the Wulff-Kaishew construction. It decreases when the particle size increases, and with the formation of defects at the interface.

引用

页码：1649 / 1658