Hydrogen-induced structural transformation of AuCu nanoalloys probed by synchrotron X-ray diffraction techniques

In situ X-ray diffraction measurements reveal that the transformation of a AuCu nanoalloy from a face-centered-cubic to an L10 structure is accelerated under a hydrogen atmosphere. The structural transformation rate for the AuCu nanoalloy under hydrogen above 433 K was found to be 100 times faster t...

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Published inNanoscale Vol. 6; no. 8; pp. 4067 - 4071
Main Authors Yamauchi, M, Okubo, K, Tsukuda, T, Kato, K, Takata, M, Takeda, S
Format Journal Article
LanguageEnglish
Published England 21.04.2014
Subjects
Copper - chemistry
Gold Alloys - chemistry
Hot Temperature
Hydrogen - chemistry
Metal Nanoparticles - chemistry
Synchrotrons
X-Ray Diffraction
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Summary:In situ X-ray diffraction measurements reveal that the transformation of a AuCu nanoalloy from a face-centered-cubic to an L10 structure is accelerated under a hydrogen atmosphere. The structural transformation rate for the AuCu nanoalloy under hydrogen above 433 K was found to be 100 times faster than that in a vacuum, which is the first quantitative observation of hydrogen-induced ordering of nanoalloys.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:2040-3364
2040-3372
DOI:10.1039/c3nr06327e