A New Method for Determining the Composition of Core–Shell Nanoparticles via Dual‐EDX+EELS Spectrum Imaging
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Peer-reviewed
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Abstract
Simultaneously acquired microanalytical X‐ray and electron energy loss signals are obtained from a bimetallic core–shell nanoparticle system (FePt@Fe 3 O 4 ). The signals are decomposed using independent component analysis and the extracted components are used to separately quantify the composition of the spatially overlapping core and shell phases in the nanoheterostructure. The utilization of the complementary strengths of energy dispersive X‐ray and electron energy‐loss spectroscopy microanalysis has enabled the quantification of both light and heavy elements in a single spectrum image acquisition.
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Particle & Particle Systems Characterization
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0934-0866
1521-4117
1521-4117
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Wiley
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Except where otherwised noted, this item's license is described as All rights reserved
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European Research Council (291522)
European Commission (312483)
European Commission (312483)
D.R. acknowledges support from the Royal Society’s Newton International Fellowship scheme. P.A.M acknowledges financial support from the European Research Council under the European Union’s Seventh Framework Programme (FP7/ 2007-2013)/ERC grant agreement 291522-3DIMAGE. P.A.M. also acknowledges financial support from the European Union’s Seventh Framework Programme of the European Commission: ESTEEM2, contract number 312483. B.R.K. thanks the UK EPSRC for financial support (EP/J500380/1).