Abstract
The results from 57Fe Mössbauer spectroscopic studies of multiferroic BiFeO3 in a range of tem-peratures including that of the magnetic phase transition are presented. The Mössbauer spectra are processed and analyzed by reconstructing the hyperfine magnetic field distributions and interpreting the spectra with a cycloid-type spatial spin-modulated structure model. The temperature dependences of the hyperfine spectrum parameters (the Mössbauer line shift, the quadrupole shift, and the isotropic and anisotropic contributions to the hyperfine magnetic field) are obtained, along with the anharmonicity parameter of an incommensurate spin wave.
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Original Russian Text © V.S. Rusakov, V.S. Pokatilov, A.S. Sigov, M.E. Matsnev, T.V. Gubaidulina, 2015, published in Izvestiya Rossiiskoi Akademii Nauk. Seriya Fizicheskaya, 2015, Vol. 79, No. 6, pp. 771–774.
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Rusakov, V.S., Pokatilov, V.S., Sigov, A.S. et al. Temperature investigations of the spatial spin-modulated structure of multiferroic BiFeO3 by means of Mössbauer spectroscopy. Bull. Russ. Acad. Sci. Phys. 79, 708–711 (2015). https://doi.org/10.3103/S1062873815060271
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DOI: https://doi.org/10.3103/S1062873815060271