Journal article
Revealing local order via high energy EELS
MATERIALS TODAY NANO, v 21, 100298
Mar 2023
Abstract
Short range order (SRO) is critical in determining the performance of many important engineering materials. However, accurate characterization of SRO with high spatial resolution -which is needed for the study of individual nanoparticles and at material defects and interfaces -is often experimentally inaccessible. Here, we locally quantify SRO via scanning transmission electron microscopy with extended energy loss fine structure analysis. Specifically, we use novel instrumentation to perform electron energy loss spectroscopy out to 12 key, accessing energies which are conventionally only possible using a synchrotron. Our data is of sufficient energy resolution and signal-to-noise ratio to perform quantitative extended fine structure analysis, which allows determination of local coordination environments. To showcase this technique, we investigate a multicomponent metallic glass nanolaminate and locally quantify the SRO with <10 nm spatial resolution; this measurement would have been impossible with conventional synchrotron or electron microscopy methods. We discuss the nature of SRO within the metallic glass phase, as well as the wider applicability of our approach for determining processing-SRO-property relationships in complex materials.(c) 2022 Elsevier Ltd. All rights reserved.
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Details
- Title
- Revealing local order via high energy EELS
- Publication Details
- MATERIALS TODAY NANO, v 21, 100298
- Publisher
- ELSEVIER; AMSTERDAM
- Grant note
- The authors thank Ian MacLaren and Rebecca Cummings for helpful discussions regarding high energy EELS acquisition and processing; Simon Billinge for providing critical feedback on the BMG EXELFS fit; Kanit Hantanasirisakul for reviewing the manuscript; and James Nathaniel for providing the Au sample. The authors thank the Drexel Centralized Research Facilities for supporting electron spectroscopy measurements. JL Hart, AC Lang, and ML Taheri acknowledge funding in part from the National Science Foundation (NSF) MRI award #DMR-1429661, the US Department of Energy, Office of Basic Energy Sciences through contract DE-SC0020314, and the Office of Naval Research through contract N00014-20-1-2368. EXAFS analysis and modeling by AI Frenkel were supported as part of the Integrated Mesoscale Architectures for Sustainable Catalysis (IMASC), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award #DE-SC0012573. SN Mathaudhu and S Shahrezaei acknowledge the support of NSF CMMI award #1550986 and #1554632. ML Falk acknowledges funding from the National Science Foundation (NSF) under award #DMR-1910066/1909733. This research used beam line 7-BM (QAS) of the National Synchrotron Light Source II, a U.S. DOE Office of Science User Facility operated for the DOE Office of Science by Brookhaven National Laboratory under contract no. DE-SC0012704. Beam line operations were supported in part by the Synchrotron Catalysis Consortium (U.S. DOE, Office of Basic Energy Sciences, grant no. DE-SC0012335).
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Drexel University
- Web of Science ID
- WOS:000990481200001
- Scopus ID
- 2-s2.0-85146420273
- Other Identifier
- 991021861305904721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology