Structure and Mössbauer Spectroscopy Studies of Multiferroic Mechanically Activated Aurivillius Compounds

M. Mazureka, D. Oleszakb, T. Pikulaa, M. Karolusc and E. Jartycha aInstitute of Electronics and Information Technology, Lublin University of Technology, Nadbystrzycka 38a, 20-618 Lublin, Poland bFaculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, 02-507 Warsaw, Poland c Institute of Materials Science, University of Silesia, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland

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X-ray diffraction and 57Fe Mössbauer spectroscopy were applied as complementary methods to investigate the structure and hyperfine interactions of the Aurivillius compounds prepared by mechanical activation and subsequent heat treatment. Preliminary milling of precursors enhanced the diffusion process and pure Aurivillius compounds were obtained at lower temperature as compared with conventional solid-state sintering technology (lower at least by 50 K). All the investigated Aurivillius compounds are paramagnetic materials at room temperature.

DOI: 10.12693/APhysPolA.126.975 PACS numbers: 75.85.+t, 81.20.-n, 61.05.cp, 76.80.+y