The structure of Cu<sub>2</sub>Se prepared by different methods
The samples of Cu<sub>2</sub>Se were prepared using mechanochemical synthesis and compacted by means of spark plasma sintering and hot pressing. The structure and phase composition before and after heat treatment were investigated with methods of X-ray diffractometry and raster electron microscopy. It is shown how the shape and size of structural elements changes in prepared samples. The changes of phase composition in temperature range 25-500° C were investigated in situ.