METHOD FOR GROWING OF CUPRUM(I)PENTATIOPHOSPHATE(V) BROMIDE Cu6PS5Br MONOCRYSTALS BY DIRECTIONAL CRYSTALLIZATION FROM SMELT

摘要

The invention relates to inorganic chemistry and inorganic material science. A method for growing of cuprum(I)pentatiphosphate (V) bromide Cu6PS5Br monocrystals by directional crystallization from smelt comprises the step heating of vacuum-treated quarts ampoules containing starting components cooper, phosphorus, sulfur and pre-synthesized CuBr in the required stoichiometric ratio. The heating is carried out to maximal temperature and smelt is kept at this temperature during 24 hours with further growing of monocrystals, wherein maximal temperature of synthesis is 1330 K, and monocrystals are grown with rate of 3 mm/day in ampoules with the conical end. The proposed method is intuitive, fast and allows to produce monocrystalls of large sizes.