Growth and Spectroscopic and Magnetic Properties of TbCr3(BO3)4 Crystals
We have studied and optimized conditions for spontaneous flux growth of TbCr3(BO3)4 crystals.
Phase relations in the pseudoternary system TbCr3(BO3)4–K2Mo3O10–B2O3 have been studied in the temperature
range 900–1130°C and the single-phase terbium chromium borate crystallization field has been
mapped out. It has been shown that increasing the TbCr3(BO3)4 content of the starting high-temperature
solution leads to a rhombohedral-to-monoclinic phase transition. Using K2Mo3O10-based high-temperature
solutions, we have grown single-phase TbCr3(BO3)4 single crystals or crystals in which the rhombohedral
phase (sp. gr. R32) significantly prevails over the monoclinic phase (sp. gr. C2/c). The grown crystals have
been characterized by X-ray diffraction techniques, IR spectroscopy, and magnetic measurements.