Study of magnetic phase transitions and magnetic structures in a number of rare-earth ferroborates using an erbium spectroscopic probe

Станиславчук Т.Н., Чукалина Е.П., Безматериных Л.Н. Исследование магнитных фазовых переходов и магнитных структур в ряде редкоземельных ферроборатов с использованием метода эрбиевого спектроскопического зонда // Оптический журнал. 2007. Т. 74. № 2. С. 78–83.

Stanislavchuk T.N., Chukalina E.P., Bezmaternykh L.N. Study of magnetic phase transitions and magnetic structures in a number of rare-earth ferroborates using an erbium spectroscopic probe [in Russian] // Opticheskii Zhurnal. 2007. V. 74. № 2. P. 78–83.

T. N. Stanislavchuk, E. P. Chukalina, and L. N. Bezmaternykh, "Study of magnetic phase transitions and magnetic structures in a number of rare-earth ferroborates using an erbium spectroscopic probe," Journal of Optical Technology. 74 (2), 139-143 (2007). https://doi.org/10.1364/JOT.74.000139

This paper discusses exchange splitting in the spectra of Er3+ introduced as a spectroscopic probe in rare-earth ferroborates RFe₃(BO₃)₄ (R = Y, Er, Tb, Gd). The temperatures of magnetic ordering are determined [38±1 K for YFe₃(BO₃)₄, 39±1 K for ErFe₃(BO₃)₄, 41±1 K for TbFe₃(BO₃)₄, 37±1 K for GdFe₃(BO₃)₄) and the spin-reorientation transition in GdFe₃(BO₃)₄: TR = 7,5 ± 0,5 K. Based on a comparison of the Er³⁺ spectra in GdFe₃(BO₃)₄, the magnetic structure of which is known, and in other ferroborates, a conclusion is made concerning the orientation of the magnetic moments of iron M_Fe in the magnetically ordered state: M_Fe⊥c for yttrium and erbium ferroborates, and M_Fe||c - for terbium ferroborate.