Core-shell structure disclosed in self-assembled Cu-Ag nanoalloy particles.
(2013) In Journal of Chemical Physics 138(10).- Abstract
- Core-shell segregation of copper and silver in self-assembled, free nanoparticles is established by means of photoelectron spectroscopy in a wide range of relative Cu-Ag concentrations. These conclusions are based on the analysis of the photon-energy-dependent changes of the Cu 3d and Ag 4d photoelectron spectra. The nanoparticles are formed from mixed Cu-Ag atomic vapor created by magnetron sputtering of a bimetallic sample in a gas-aggregation cluster source. Even at similar Cu and Ag fractions in the primary vapor the surface of the nanoparticles is dominated by silver. Only at low Ag concentration copper appears on the surface of nanoparticles. For the latter case, a threefold decrease in the Ag 4d spin-orbit splitting has been... (More)
- Core-shell segregation of copper and silver in self-assembled, free nanoparticles is established by means of photoelectron spectroscopy in a wide range of relative Cu-Ag concentrations. These conclusions are based on the analysis of the photon-energy-dependent changes of the Cu 3d and Ag 4d photoelectron spectra. The nanoparticles are formed from mixed Cu-Ag atomic vapor created by magnetron sputtering of a bimetallic sample in a gas-aggregation cluster source. Even at similar Cu and Ag fractions in the primary vapor the surface of the nanoparticles is dominated by silver. Only at low Ag concentration copper appears on the surface of nanoparticles. For the latter case, a threefold decrease in the Ag 4d spin-orbit splitting has been detected. The specific component distribution and electronic structure changes are discussed in connection with the earlier results on Cu-Ag macroscopic and surface alloys. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3627889
- author
- Tchaplyguine, Maxim LU ; Andersson, T ; Zhang, Ch and Björneholm, Olle LU
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Chemical Physics
- volume
- 138
- issue
- 10
- article number
- 104303
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- wos:000316543400028
- pmid:23514485
- scopus:84875126941
- pmid:23514485
- ISSN
- 0021-9606
- DOI
- 10.1063/1.4794045
- language
- English
- LU publication?
- yes
- id
- f6e052c2-345d-4565-bc50-7c1766c55638 (old id 3627889)
- date added to LUP
- 2016-04-01 10:38:42
- date last changed
- 2022-04-20 04:50:48
@article{f6e052c2-345d-4565-bc50-7c1766c55638,
abstract = {{Core-shell segregation of copper and silver in self-assembled, free nanoparticles is established by means of photoelectron spectroscopy in a wide range of relative Cu-Ag concentrations. These conclusions are based on the analysis of the photon-energy-dependent changes of the Cu 3d and Ag 4d photoelectron spectra. The nanoparticles are formed from mixed Cu-Ag atomic vapor created by magnetron sputtering of a bimetallic sample in a gas-aggregation cluster source. Even at similar Cu and Ag fractions in the primary vapor the surface of the nanoparticles is dominated by silver. Only at low Ag concentration copper appears on the surface of nanoparticles. For the latter case, a threefold decrease in the Ag 4d spin-orbit splitting has been detected. The specific component distribution and electronic structure changes are discussed in connection with the earlier results on Cu-Ag macroscopic and surface alloys.}},
author = {{Tchaplyguine, Maxim and Andersson, T and Zhang, Ch and Björneholm, Olle}},
issn = {{0021-9606}},
language = {{eng}},
number = {{10}},
publisher = {{American Institute of Physics (AIP)}},
series = {{Journal of Chemical Physics}},
title = {{Core-shell structure disclosed in self-assembled Cu-Ag nanoalloy particles.}},
url = {{http://dx.doi.org/10.1063/1.4794045}},
doi = {{10.1063/1.4794045}},
volume = {{138}},
year = {{2013}},
}