Crystal structure and Mössbauer study of FeAl2O4

Ilona Jastrzębska 1 , Jacek Szczerba 1 , Paweł Stoch 1 , Artur Błachowski 2 , Krzysztof Ruebenbauer 2 , Ryszard Prorok 1  and Edyta Śnieżek 1
  • 1 Department of Ceramics and Refractories, Faculty of Materials Science and Ceramics, AGH – University of Science and Technology, 30 Mickiewicza Ave., 30-059 Kraków, Poland
  • 2 Mössbauer Spectroscopy Division, Institute of Physics, Pedagogical University, 2 Podchorążych Str., 30-084 Kraków, Poland


In this work the synthesis of hercynite from Fe2O3 and Al2O3 powders was carried out by arc-melting method under the protective argon atmosphere. The obtained material was characterized with the use of powder X-ray diffractometry (XRD) and Mössbauer spectroscopy (MS). A Mössbauer effect in hercynite obtained by the arc-melting method indicated the cations distribution in the spinel structure among the tetrahedral and octahedral interstices. The presence of Fe2+ ions was detected in both tetrahedral and octahedral sites while Fe3+ ions occupied only the octahedral interstices. The approximate formula of the obtained iron-aluminate spinel was as follows (Fe2+ 0.77Al3+ 0.23) (Fe3+ 0.07Fe2+ 0.05Al0.88)2O4.

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