Eur. Phys. J. AP
Volume 9, Number 2, February 2000
|Page(s)||147 - 151|
|Published online||15 February 2000|
Phase analysis of nanocomposite magnetic materials by electron energy loss spectrometry
Institut für Angewandte und Technische Physik, Technische
Universität Wien, 1040 Wien, Austria
2 LMSS-Mat, CNRS-URA 850, École Centrale Paris, grande voie des Vignes, 92295 Châtenay-Malabry, France
Revised: 19 October 1999
Accepted: 17 January 2000
Published online: 15 February 2000
EELS (electron energy loss spectrometry) in the transmission electron microscope (TEM) was used to determine the composition of a nanocrystalline magnetic specimen. The relative amounts of the hard magnetic phase Nd2Fe14B and the soft magnetic phase Fe3B at the point of measurement was measured by standard EELS quantification. In order to determine the structure of Fe3B present, the fine structure of the boron K-ionisation edge was analysed. Comparison of the experimental spectra with simulations of the fine structures based on the TELNES extension of the WIEN97 program package, a full potential linearised augmented plane wave approach to the calculation of electronic structure in crystals, shows that the tetragonal form of Fe3B is predominant.
PACS: 82.80.Pv – Electron spectroscopy (x-ray photoelectron (XPS), Auger electron spectroscopy (AES), etc.) / 75.50.Kj – Amorphous and nanocrystalline magnetic materials; quasicrystals
© EDP Sciences, 2000
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