Low Temperature Physics: 41, 75 (2015); https://doi.org/10.1063/1.4906338
Magnetic resonance and spin-reorientation transitions in Nd0.75Ho0.25Fe3(BО3)4 multiferroic
M.I. Kobets, K.G. Dergachev, S.L. Gnatchenko, E.N. Khatsko
B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
L.N. Bezmaternykh, and I.A. Gudim
L.V. Kirenskiy Institute of Physics, Siberian Branch of the Russian Academy of Sciences Krasnoyarsk 660036, Russia
Received November 6, 2014
The experimental data on high frequency resonant properties of multiferroic Nd0.75Ho0.25Fe3(BО3)4 investigated by the antiferromagnetic resonance method (AFMR) in wide frequency and temperature ranges are presented. The influence of substitution of Ho3+ ions for Nd3+ ones on resonant properties of Nd0.75Ho0.25Fe3(BО3)4 solid solution was studied. The peculiarities of field-induced spin-reorientation phase transitions for directions H || с and H || а are considered. For these directions the magnetic anisotropy changes from “easy axies” anisotropy to “easy plane” one. The AFMR modes of the Fe3+subsystem were revealed. New information about the main AFMR characteristics was obtained. It is shown that dominant in this compound is the “easy plane” ani-sotropy with a week anisotropy in the basal plane. It is for the first time that some specific features were observed in the AFMR spectra that were supposed to be due to a space-modulated spin structure (incom-mensurate phase) in the Nd0.75Ho0.25Fe3(BО3)4.
PACS: 75.50.Ee Antiferromagnetics;
Key words: antiferromagnetic resonance, multiferroic, magnetic anisotropy, spin-reorientation transitions.
Published online: November 24, 2014