Chalcogen, Transitional, Fdd2

• Ag-Ga-Ge-Se
• Cu-O-V
• Ag-Ga-Ge-S
• Ag-N-Na-O
• Au-O
• structural properties
• optical properties
• phonons
• magnetic properties
• electronic and electrical properties
• chalcogen
• transitional
• non-disordered
• quaternary
• orthorhombic