SPONTANEOUS ALLOYING IN NANOMETER-SIZED AMORPHOUS ANTIMONY CLUSTERS

Author:

YASUDA H.1,MORI H.2

Affiliation:

1. Department of Materials Science and Engineering, Faculty of Engineering, Osaka University, Yamadaoka, Suita, Osaka 565, Japan

2. Research Center for Ultra-High Voltage Electron Microscopy, Osaka University, Yamadaoka, Suita, Osaka 565, Japan

Abstract

Alloying behavior of gold atoms into namometer-sized amorphous antimony (a-Sb) clusters has been studied by TEM. Gold atoms which came in contact with a-Sb clusters quickly dissolved into the clusters, and clusters of either an a-(Sb-Au) alloy or the compound AuSb 2 were formed, depending on the gold concentration in clusters. The ease with which such rapid spontaneous alloying takes place decreased with increasing size of original a-Sb clusters. It is suggested that the origin and mechanism of rapid spontaneous alloying are common to both amorphous and crystalline atom clusters.

Publisher

World Scientific Pub Co Pte Lt

Subject

Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces,Condensed Matter Physics

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