Features of synthesis of TbCr${}_3$(BO${}_3$)${}_4$ single crystals by solution-melt method

The phase formation of terbium chromium borate in melt solutions based on bismuth trimolybdate and lithium tungstate was studied. It was shown that there is no trigonal phase of terbium chromium borate in a system based on bismuth trimolybdate at all component ratios. The ratio of components of a system based on lithium tungstate has been found, at which trigonal TbCr${}_3$(BO${}_3$)${}_4$ crystals are formed at temperatures above 1100${}^{\circ }$C, and below this temperature only a monoclinic phase is formed. The X-ray properties of the grown crystals were studied.