NUKLEONIKA 2013, 58(1):143-147

 


STRUCTURE AND HYPERFINE INTERACTIONS OF MULTIFERROIC Bim+1Ti3Fem-3O3m+3 CERAMICS PREPARED BY MECHANICAL ACTIVATION



Mariusz Mazurek1, El¿bieta Jartych1, Dariusz Oleszak2

1 Lublin University of Technology, Institute of Electronics and Information Technology,
38A Nadbystrzycka Str., 20-618 Lublin, Poland
2 Warsaw University of Technology, Faculty of Materials Science and Engineering,
141 Wo³oska Str., 02-507 Warsaw, Poland

The structure and hyperfine interactions in the Bi5Ti3FeO15, Bi6Ti3Fe2O18 and Bi7Ti3Fe3O21 multiferroic ceramics were studied using X-ray diffraction and Mössbauer spectroscopy. Samples were prepared by mechanical activation process in a high-energy ball mill from a mixture of TiO2, Fe2O3 and Bi2O3 oxides as polycrystalline precursor materials. The mechanical milling process was completed by thermal processing. A pure single-phased material was obtained in the case of Bi7Ti3Fe3O21 compound. The proposed mechanical activation technology allows to produce the Aurivillius compounds at lower temperature, by about 50 K, as compared to the solid-state sintering method.

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