Specific Features of Magnetic Properties of Rare-Earth
Ferroborates Sm_1xLa_xFe₃(BO₃)₄

E. V. Eremin^{a, b,} *, N. V. Volkov^{a, b}, V. L. Temerov^a, I. A. Gudim^a, and A. F. Bovina^a

^a Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences,
Akademgorodok 50–38, Krasnoyarsk, 660036 Russia

* e-mail: eev@iph.krasn.ru

^b Siberian Federal University, Svobodnyi pr. 79, Krasnoyarsk, 660041 Russia

Received September 11, 2014

Abstract—Single crystals of rare-earth ferroborates Sm_1–xLa_xFe₃(BO₃)₄ (x = 0, 0.5, 0.75) have been grown by
the flux method. Their magnetic properties have been investigated in the temperature range from 2 to 300K in
magnetic fields up to 9 T. It has been found that the substitution of nonmagnetic ions La³⁺ for magnetic ions
Sm³⁺ in Sm_1–xLa_xFe₃(BO₃)₄ ferroborates leads to an increase in the magnetic susceptibility of the compound.
The behavior of the magnetic properties of the grown single crystals has been explained qualitatively in the
framework of the phenomenological model. The parameters of d–d and d–f exchange interactions have been
estimated.

DOI: 10.1134/S1063783415030051

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