KCuGd2S4 oS32 63

• Cu-K-S-Sm
• Cu-K-S-Y
• Cu-Rb-S-Sm
• Cu-Gd-Rb-Se
• Cs-Cu-Nd-Se
• structural properties
• optical properties
• electronic and electrical properties
• electronic energy gap
• values of electronic energy gap
• rare earth
• quaternary
• chalcogen
• non-disordered
• alkali
• orthorhombic