Abstract
Fluxes with a wide stability range of trigonal DyFe3(BO3)4 were selected by the successive-approximation method using direct phase probing in the Bi2Mo3O12-B2O3-Dy2O3-Fe2O3 system. Crystallization parameters of the fluxes were determined. The conditions for single-crystal growth were recommended using both spontaneous crystal nucleation and seeded growth according to the Kyropoulos method. An analysis of the measured temperature and field dependences of magnetization of crystals in fields parallel or perpendicular to the threefold axis led to the conclusion that DyFe3(BO3)4 undergoes a phase transition to an ordered easy-axis state and is characterized by a field-induced spin-reorientation transition with the predominant alignment of Dy3+ spins along the applied field.
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