Metals

Effect of crystal-chemical growth conditions of single crystals of trigonal ferroborates Ho$_{0.5}$Nd$_{0.5}$Fe$_3$(BO$_3$)$_4$ with huntite structure on their magnetic properties

V. R. Titova, I. A. Gudim, A. V. Shabanov, E. V. Eremin

L. V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk

Abstract: This work aimed to compare the magnetic properties of Ho$_{0.5}$Nd$_{0.5}$Fe$_3$(BO$_3$)$_4$ single crystals grown from different solution melts: based on bismuth trimolybdate and lithium tungstate. Single crystals of ferroborate from lithium-tungstate melt solution were grown for the first time. The chemical composition of ferroborates was determined using energy dispersive spectroscopy. It was found that Bi$^{3+}$ ions replace Nd$^{3+}$ ions (5% at.) in the case of using bismuth trimolybdate solvent. When using a lithium-tungstate melt solution, impurities from the solvent do not enter the crystal matrix. From magnetic studies, the Neel temperatures $T_{\mathrm{N}}$ and paramagnetic Curie temperatures were determined, effective magnetic moments $\mu_{\mathrm{eff}}$ calculated, and phase diagrams of the magnetic state “temperature – magnetic field” of the studied compounds were constructed.

Keywords: solution-melt method, magnetic dielectrics, antiferromagnets.

Received: 05.11.2025
Revised: 19.11.2025
Accepted: 20.11.2025

DOI: 10.61011/FTT.2025.11.62128.311-25

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