Mössbauer studies of spatial spin-modulated structure and hyperfine interactions in multiferroic Bi57Fe0.10Fe0.85Cr0.05O3
| Autor: | A. E. Komarov, Alexei A. Belik, Vyacheslav S. Rusakov, A. S. Sigov, V. S. Pokatilov, M. E. Matsnev |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Condensed matter physics Solid-state physics Anharmonicity Atmospheric temperature range Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Condensed Matter::Materials Science Magnetic anisotropy 0103 physical sciences Mössbauer spectroscopy Condensed Matter::Strongly Correlated Electrons Multiferroics 010306 general physics Anisotropy Hyperfine structure |
| Zdroj: | Physics of the Solid State. 59:443-449 |
| ISSN: | 1090-6460 1063-7834 |
| DOI: | 10.1134/s1063783417030271 |
| Popis: | Results of Mossbauer investigations on 57Fe nuclei in multiferroic material Bi57Fe0.10Fe0.85Cr0.05O3 in the temperature range from 5.2 to 300 K are presented. Bulk rhombohedral samples were obtained by solidstate synthesis at high pressure. Mossbauer spectra were analyzed using the model of spatial incommensurate spin-modulated structure of the cycloidal type. Information on the influence of substituting Cr cations for Fe cations on hyperfine spectral parameters was obtained: the shift and quadrupolar shift of a Mossbauer line, and isotropic and anisotropic contributions into the hyperfine magnetic field. The anharmonicity parameter m of the spatial spin-modulated structure increases almost 1.7 times at 5.2 K when BiFeO3 is doped with chromium. The data on m were used for calculation of the uniaxial magnetic anisotropy constants and their temperature dependences for pure and chromium-doped BiFeO3. |
| Databáze: | OpenAIRE |
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