Crystal structure and Mössbauer study of FeAl2O4

Autor: Jastrzębska Ilona, Szczerba Jacek, Stoch Paweł, Błachowski Artur, Ruebenbauer Krzysztof, Prorok Ryszard, Śnieżek Edyta
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Nukleonika, Vol 60, Iss 1, Pp 47-49 (2015)
Druh dokumentu: article
ISSN: 0029-5922
DOI: 10.1515/nuka-2015-0012
Popis: 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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