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Chemical and structural properties of the system Fe2O3-Nd2O3

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Abstract

Chemical and structural properties of the system (1−x)Fe2O3 + xNd2O3, 0≤x≤1, were investigated using X-ray diffraction, 57Fe Mössbauer spectroscopy and Fourier transform-infrared (FT-IR) spectroscopy. The samples were prepared by the chemical coprecipitation and thermal treatment of Fe(OH)3/Nd(OH)3 coprecipitates. X-ray diffraction showed the presence of oxide phases α-Fe2O3 + NdFeO3 in the Fe2O3-rich region, and the oxide phases Nd2O3 + NdFeO3 in the Nd2O3-rich region. 57Fe Mössbauer spectra were characterized with one sextet of spectral lines at room temperature. Mathematical evaluation of the Mössbauer spectra showed distinct regularities in the changes of Mössbauer parameters, thus indicating the presence of two subspectra with very similar spectral behaviour. High sensitivity of the Nd2O3 phase to the moisture and atmosphere CO2 was demonstrated by FT-IR spectroscopy.

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Authors and Affiliations

  1. Ruder Bošković Institute, P.O. Box 1016, 41001, Zagreb

    S. Musić, S. Popović & M. Ristić

  2. Department of Physics, Faculty of Science, P.O. Box 162, 41001, Zagreb, Croatia

    S. Popović

  3. Institut für Festkörperphysik der Universität Wien, Strudlhofgasse 4, A-1090, Vienna, Austria

    B. Sepiol

Authors
  1. S. Musić
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  2. S. Popović
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  3. M. Ristić
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  4. B. Sepiol
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Musić, S., Popović, S., Ristić, M. et al. Chemical and structural properties of the system Fe2O3-Nd2O3 . JOURNAL OF MATERIALS SCIENCE 29, 1714–1718 (1994). https://doi.org/10.1007/BF00351287

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  • DOI: https://doi.org/10.1007/BF00351287

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