title: Hydrogen-induced structural transformation of AuCu nanoalloys probed by synchrotron X-ray diffraction techniques.
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.
authors.affiliation: WPI-I2CNER, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Yamauchi
authors.forename: K
authors.initials: K
authors.lastname: Okubo
authors.forename: T
authors.initials: T
authors.lastname: Tsukuda
authors.forename: K
authors.initials: K
authors.lastname: Kato
authors.forename: M
authors.initials: M
authors.lastname: Takata
authors.forename: S
authors.initials: S
authors.lastname: Takeda
mesh_terms: D003300:Copper / Q000737:chemistry*; D006047:Gold Alloys / Q000737:chemistry*; D006358:Hot Temperature; D006859:Hydrogen / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D017356:Synchrotrons; D014961:X-Ray Diffraction
chemical_list: D006047:Gold Alloys; D003300:Copper; D006859:Hydrogen