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@ARTICLE{Drescher:617633,
author = {Drescher, Sophie and Kuzmin, Aleksejs and Welter, Edmund
and Freudenberger, Jens and Smekhova, Alevtina},
title = {{C}omponent-dependent lattice distortions and atomic scale
insights in multi-component {A}u-{C}u-{N}i-{P}d-{P}t based
alloys},
journal = {Nano research},
volume = {18},
number = {1},
issn = {1998-0124},
publisher = {Springer},
reportid = {PUBDB-2024-06939},
pages = {94907122},
year = {2025},
note = {it is currently published online at
https://www.sciopen.com/article/10.26599/NR.2025.94907122
(as just accepted manuscript); the final version should be
available till the end of the year.},
abstract = {In our study, the composition-dependent effects of atomic
displacements in Au-Cu-Ni-Pd-Pt based alloys, comprising
elements with large differences in atomic radii, are
investigated at the atomic scale. Two alloys—the equimolar
AuCuNiPdPt and AuCuNiPd—have been characterized using
multi-edge extended X-ray absorption fine structure
spectroscopy (EXAFS) in conjunction with reverse Monte Carlo
simulations (RMC) at room temperature. The
statistically-averaged component-dependent pair distribution
functions (PDFs), which represent the distribution of atoms
around the assumed regular fcc lattice positions, reveal a
shift of their first peak to shorter distances and a
pronounced asymmetry in atomic distribution only for atoms
with small radii (Cu/Ni). The analysis demonstrates that
small atoms (Cu/Ni) are significantly more displaced from
the expected lattice positions as compared to large atoms
(Au/Pt). Furthermore, there are indications of preferential
next-neighbour bonding that changes depending on the alloy
composition. The most pronounced changes in the PDFs were
found solely for Pd. With this study, we provide a basis for
a deeper understanding of the composition-dependent atomic
arrangement in chemically complex solid solutions.},
cin = {DOOR ; HAS-User / FS-PET-S},
ddc = {660},
cid = {I:(DE-H253)HAS-User-20120731 /
I:(DE-H253)FS-PET-S-20190712},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G3 - PETRA III (DESY) (POF4-6G3) /
CAMART2 - Centre of Advanced Materials Research and
Technology Transfer CAMART² (739508) / FS-Proposal:
I-20220966 (I-20220966) / FS-Proposal: I-20230231
(I-20230231)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G3 /
G:(EU-Grant)739508 / G:(DE-H253)I-20220966 /
G:(DE-H253)I-20230231},
experiment = {EXP:(DE-H253)P-P65-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001408207500001},
doi = {10.26599/NR.2025.94907122},
url = {https://bib-pubdb1.desy.de/record/617633},
}