Spontaneous alloying of copper into gold atom clusters
作者： H. Mori , M. Komatsu , K. Takeda , H. Fujita
DOI: 10.1080/09500839108205987
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摘要: Abstract A double-source evaporator which can be set in the specimen chamber of a high voltage electron microscope has been constructed, With use evaporator, isolated gold clusters 5 ~ 10 nm size were first prepared on supporting film amorphous carbon, and then copper atoms deposited onto (and course as well), was kept at room temperature. Upon deposition copper, changed into highly concentrated, homogeneously mixed Au—Cu alloy clusters. The atom diffusivity deduced from present observations is least 9 orders magnitude faster than solute diffusion bulk gold.
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