Funct. Mater. 2020; 27 (3): 454-457.
Mechanical properties of GaSe:Cr2+ crystals
1STC "Institute for Single Crystals", National Academy of Sciences of Ukraine, 60 Lenin Ave., 61001 Kharkiv, Ukraine
2SSI STC "Institute for Single Crystals", National Academy of Sciences of Ukraine, 60 Lenin Ave., 61001 Kharkiv, Ukraine
GaSe crystals doped with chromium selenide 0.005-0.065 wt.% (expressed for chromium) were grown by the Bridgman technique. The crystals are characterized by perfect cleavage. It was found that the chromium concentration increases along the boule (segregation coefficient >>1). It was found that the introduction of chromium selenide increases the microhardness of GaSe-based crystals up to 0.122 GPa (0.065 wt.% Cr) and does not affect substantially optical properties of the crystals.
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