Mössbauer Spectroscopy and Magnetoelectric Effect Studies of Multiferroic Ceramics Based on BiFeO₃

Abstract:

In this work the results of investigations for (BiFeO₃)_x(BaTiO₃)_1-x and Bi_1-xNd_xFeO₃ solid solutions are described. Samples were prepared by the conventional solid-state sintering method. X-ray diffraction, ⁵⁷Fe Mössbauer spectroscopy, and magnetoelectric effect measurements were applied as complementary methods to determine the structure and magnetic properties of materials. For (BiFeO₃)_x(BaTiO₃)_1-x solid solutions Mössbauer spectroscopy revealed the relationship between the content of BiFeO₃ and the magnetic properties of the samples. Moreover, the presence of magnetoelectric coupling in (BiFeO₃)_x(BaTiO₃)_1-x solid solutions was registered at room temperature for the materials sintered at various temperatures. The maximum value of magnetoelectric voltage coefficient was achieved for 0.7(BiFeO₃)0.3(BaTiO₃) sintered at 1153K. Structure of Bi_1-xNd_xFeO₃ solid solutions was investigated in the whole range of concentration. Hyperfine interactions parameters were determined for the first time for these solid solutions.

• Periodical: Key Engineering Materials (Volumes 602-603)
• Pages: 936-941
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.602-603.936
• Online since: March 2014
• Authors: Elzbieta Jartych, Tomasz Pikula, Karol Kowal, Agata Lisińska-Czekaj, Dionizy Czekaj
• Keywords: Hyperfine Interactions, Magnetoelectric Effect, Mössbauer Spectroscopy, Multiferroic Ceramics

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