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@ARTICLE{MacArthur:891572,
author = {MacArthur, Katherine E. and Yankovich, Andrew B. and
Béché, Armand and Luysberg, Martina and Brown, Hamish G.
and Findlay, Scott D. and Heggen, Marc and Allen, Leslie J.},
title = {{O}ptimizing {E}xperimental {C}onditions for {A}ccurate
{Q}uantitative {E}nergy-{D}ispersive {X}-ray {A}nalysis of
{I}nterfaces at the {A}tomic {S}cale},
journal = {Microscopy and microanalysis},
volume = {27},
number = {3},
issn = {1431-9276},
address = {New York, NY},
publisher = {Cambridge University Press},
reportid = {FZJ-2021-01597},
pages = {528},
year = {2021},
abstract = {The invention of silicon drift detectors has resulted in an
unprecedented improvement in detection efficiency for
energy-dispersive X-ray (EDX) spectroscopy in the scanning
transmission electron microscope. The result is numerous
beautiful atomic-scale maps, which provide insights into the
internal structure of a variety of materials. However, the
task still remains to understand exactly where the X-ray
signal comes from and how accurately it can be quantified.
Unfortunately, when crystals are aligned with a low-order
zone axis parallel to the incident beam direction, as is
necessary for atomic-resolution imaging, the electron beam
channels. When the beam becomes localized in this way, the
relationship between the concentration of a particular
element and its spectroscopic X-ray signal is generally
nonlinear. Here, we discuss the combined effect of both
spatial integration and sample tilt for ameliorating the
effects of channeling and improving the accuracy of EDX
quantification. Both simulations and experimental results
will be presented for a perovskite-based oxide interface. We
examine how the scattering and spreading of the electron
beam can lead to erroneous interpretation of interface
compositions, and what approaches can be made to improve our
understanding of the underlying atomic structure.},
cin = {PGI-5 / ER-C-1},
ddc = {500},
cid = {I:(DE-Juel1)PGI-5-20110106 / I:(DE-Juel1)ER-C-1-20170209},
pnm = {535 - Materials Information Discovery (POF4-535) / DFG
project 257727131 - Nanoskalige Pt
Legierungselektrokatalysatoren mit definierter Morphologie:
Synthese, Electrochemische Analyse, und ex-situ/in-situ
Transmissionselektronenmikroskopische (TEM) Studien
(257727131)},
pid = {G:(DE-HGF)POF4-535 / G:(GEPRIS)257727131},
typ = {PUB:(DE-HGF)16},
pubmed = {33843542},
UT = {WOS:000664532400007},
doi = {10.1017/S1431927621000246},
url = {https://juser.fz-juelich.de/record/891572},
}