ALLOYING BEHAVIOR OF GOLD ATOMS INTO NM-SIZED COPPER CLUSTERS

被引：13

作者：

YASUDA, H ^{[1
]}

MORI, H ^{[1
]}

KOMATSU, M ^{[1
]}

TAKEDA, K ^{[1
]}

机构：

[1] OSAKA UNIV,ULTRA HIGH VOLTAGE ELECTRON MICROSCOPY RES CTR,SUITA,OSAKA 565,JAPAN

来源：

APPLIED PHYSICS LETTERS | 1992年 / 61卷 / 18期

关键词：

D O I：

10.1063/1.108285

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Alloying behavior of gold atoms into copper clusters has been studied using a 200 kV transmission electron microscope (TEM) equipped with a double source evaporator in the specimen chamber. Isolated copper clusters of approximately 4 nm in diameter were first prepared on a supporting film of amorphous carbon, and then gold atoms were deposited onto the same film kept at room temperature. Upon the deposition of gold, the copper clusters quickly changed into homogeneously mixed Cu-Au alloy clusters. The gold diffusivities in the clusters estimated from the experimental results are at least 19 orders of magnitude faster than those in the bulk copper.

引用

页码：2173 / 2174

页数：2

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