Emergence of collinear magnetic structure in Tb-doped BiFeO3

Авторы: Gervits N.E., Tkachev A.V., Zhurenko S.V., Gunbin A.V., Gippius A.A., Makarova A.O., Pokatilov V.S.
Журнал: Journal of Magnetism and Magnetic Materials
Год издания: 2022
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Первая страница: 170031
DOI: 10.1016/j.jmmm.2022.170031
Аннотация: The search for ways to realize the multiferroic potential of BiFeO3-based compounds is being relevant for three decades. The major problem is a magnetic spatial spin-modulated structure (SSMS) that nullifies the net magnetic moment over the sample volume. In this paper, we research the effect of bismuth ferrite doping with magnetic Tb3+ ions. With the help of zero-field nuclear magnetic resonance (ZF NMR) spectroscopy, we reveal a change in the type of anisotropy from “easy-axis” to “easy-plane” even at 1.5% terbium doping. Moreover, at 8.5% Tb doping, the magnetic structure becomes collinear, SSMS deteriorates, while the crystal structure remains rhombohedral. We also observed an additional high-frequency line, similar to the lines found in the La- and Sr-doped BFO spectra, at a frequency of 75.85 MHz. Such a combination of characteristics gives this composition every chance of being a promising multiferroic compound.
Добавил в систему: Гиппиус Андрей Андреевич

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