The effect of temperature on parameters of hyperfine interactions and spatial spin-modulated structure in multiferroic BiFeO3

A detailed study of the temperature-dependent evolution of the hyperfine interaction parameters and spatial spin-modulated structure in multiferroic BiFeO 3 has been carried out by 57 Fe Mössbauer spectroscopy in a wide temperature range, including the temperature of the magnetic phase transition. T...

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Bibliographic Details
Published in:Ferroelectrics 2020-12, Vol.569 (1), p.286-294
Main Authors: Rusakov, V. S., Pokatilov, V. S., Sigov, A. S., Matsnev, M. E., Gapochka, A. M., Pyatakov, A. P.
Format: Article
Language:English
Subjects:
Anharmonicity
anharmonicity parameter
Anisotropy
Bismuth compounds
hyperfine interaction
Interaction parameters
Iron 57
Magnetic anisotropy
Magnetic fields
Mossbauer spectroscopy
Multiferroic BiFeO
Multiferroic materials
Mössbauer spectroscopy
Phase transitions
Quadrupoles
Temperature
Temperature dependence
Temperature effects
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Summary:A detailed study of the temperature-dependent evolution of the hyperfine interaction parameters and spatial spin-modulated structure in multiferroic BiFeO 3 has been carried out by 57 Fe Mössbauer spectroscopy in a wide temperature range, including the temperature of the magnetic phase transition. Temperature dependences of the hyperfine magnetic field distributions, isotropic and anisotropic contributions to hyperfine magnetic fields, quadrupole shift and the anharmonicity parameter were measured. A change in the sign of the effective magnetic anisotropy constant was detected at a temperature T ≈ 330 K. At this temperature, the magnetic anisotropy changes from the "easy axis" to the "easy plane" type.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150193.2020.1822682