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Issue 12, 2014
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EELS tomography in multiferroic nanocomposites: from spectrum images to the spectrum volume

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Abstract

Electron Energy Loss Spectroscopy (EELS) in a transmission electron microscope offers the possibility of extracting high accuracy maps of composition and electronic properties through EELS spectrum images (EELS-SI). Acquiring EELS-SI for different tilt angles, a 3D tomographic reconstruction of EELS information can be achieved. In the present work we show that an EELS spectrum volume (EELS-SV), a 4D dataset where every voxel contains a full EELS spectrum, can be reconstructed from the EELS-SI tilt series by the application of multivariate analysis. We apply this novel approach to characterize a nanocomposite material consisting of CoFe2O4 nanocolumns embedded in a BiFeO3 matrix grown on a LaNiO3 buffered LaAlO3 (001) substrate.

Graphical abstract: EELS tomography in multiferroic nanocomposites: from spectrum images to the spectrum volume

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Publication details

The article was received on 27 Feb 2014, accepted on 26 Mar 2014 and first published on 02 Apr 2014


Article type: Paper
DOI: 10.1039/C4NR01100G
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Citation: Nanoscale, 2014,6, 6646-6650
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    EELS tomography in multiferroic nanocomposites: from spectrum images to the spectrum volume

    L. Yedra, A. Eljarrat, J. M. Rebled, L. López-Conesa, N. Dix, F. Sánchez, S. Estradé and F. Peiró, Nanoscale, 2014, 6, 6646
    DOI: 10.1039/C4NR01100G

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