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@ARTICLE{Kim:642388,
author = {Kim, Yoonhee and Ahn, Kang Woo and Lee, Su Yong and Kim,
Jin Woo and Kang, Hyon Chol and Kim, Chan and Noh, Do Young},
title = {{N}anoscale {A}u–{S}i eutectic mixtures formed by
dewetting of a {A}u–{N}i film on {S}i$_3${N}$_4$},
journal = {RSC Advances},
volume = {15},
number = {49},
issn = {2046-2069},
address = {London},
publisher = {RSC Publishing},
reportid = {PUBDB-2025-05541},
pages = {41917 - 41923},
year = {2025},
abstract = {Formation of a eutectic AuSi compound was observed during
the solid state dewetting and agglomeration in a Ni–Au
bilayer thin film grown on a Si3N4 substrate using coherent
X-ray diffractive imaging, X-ray diffraction, and scanning
electron microscopy. During rapid thermal annealing at 850
°C in vacuum, AuNi films first separate into islands that
are composed of a mixture of Au-rich and Ni-rich phases. As
the dewetting proceeds, Si and nitrogen dissociate due to
the catalytic action of Ni, which resulted in the formation
of NiN, NiSi, and AuSi. With increasing time of the
annealing process, nitrogen atoms in NiN are gradually
evaporated by forming N2. The eutectic phenomenon in AuSi
alloys results in the migration of Au atoms to form Au5Si2
with a composition near the eutectic point, 18.6 $at\%$ of
Si. Our findings indicate that nucleation of the Au5Si2
alloy formation does not primarily occur through bulk
interdiffusion, but instead initiates through grain boundary
diffusion of Au atoms.},
cin = {$XFEL_E1_SPB/SFX$},
ddc = {540},
cid = {$I:(DE-H253)XFEL_E1_SPB_SFX-20210408$},
pnm = {6G13 - Accelerator of European XFEL (POF4-6G13)},
pid = {G:(DE-HGF)POF4-6G13},
experiment = {EXP:(DE-H253)XFEL-Exp-20150101},
typ = {PUB:(DE-HGF)16},
doi = {10.1039/D5RA04389A},
url = {https://bib-pubdb1.desy.de/record/642388},
}