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

M. Yamauchi; K. Okubo; T. Tsukuda; K. Kato; M. Takata; S. Takeda

doi:10.1039/c3nr06327e

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

M. Yamauchi, K. Okubo, T. Tsukuda, K. Kato, M. Takata, S. Takeda

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	4067-4071
Number of pages	5
Journal	Nanoscale
Volume	6
Issue number	8
DOIs	https://doi.org/10.1039/c3nr06327e
Publication status	Published - 2014 Apr 21
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)

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10.1039/c3nr06327e

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abstract = "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.",

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AU - Yamauchi, M.

AU - Okubo, K.

AU - Tsukuda, T.

AU - Kato, K.

AU - Takata, M.

AU - Takeda, S.

PY - 2014/4/21

Y1 - 2014/4/21

N2 - 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.

AB - 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.

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

Abstract

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