Abstract:
The Mössbauer spectra of FeBO3 single crystals are studied at temperatures above and below the magnetic transition point at different orientations of the crystals with respect to the propagation direction of γ rays. To describe the Mössbauer spectra, a theoretical model is developed with allowance for different orientations of magnetic moments in the crystal plane. It is found that the magnetic domain structure in iron borate significantly affects the shape of the Mössbauer spectra and the intensity of resonant transitions. The proposed model may be useful for determining the configuration of the magnetic domain structure of materials from Mössbauer spectroscopy data.
This work was supported by the Russian Foundation for Basic Research (project no. 19-29-12016\21-mk, preparation of crystalline samples, Mössbauer studies, and theoretical analysis), by the Ministry of Science and Higher Education of the Russian Federation (state assignment for the Federal Research Center Crystallography and Photonics, Russian Academy of Sciences; development, manufacture, and testing of a specialized experimental cell, as well as the optical processing of experimental samples), and by the Ministry of Science and Higher Education of the Russian Federation (state assignment no. FFNN-2022-0019 for the Valiev Institute of Physics and Technology, Russian Academy of Sciences; mathematical calculations).
Citation:
N. I. Snegirev, M. A. Chuev, I. S. Lyubutin, S. S. Starchikov, S. V. Yagupov, M. B. Strugatsky, “Influence of the magnetic domain structure on polarization effects in the Mössbauer spectra of iron borate FeBO3 single crystals”, Pis'ma v Zh. Èksper. Teoret. Fiz., 117:10 (2023), 770–776; JETP Letters, 117:10 (2023), 769–775