Shafer

• Eu-O
• Se-Ta
• Cu-La-O-Sr
• Ag-I
• Cu-I
• structural properties
• optical properties
• phonons
• phase transitions
• Raman spectra
• transitional
• chalcogen
• non-disordered
• binary
• disordered
• cubic
• tetragonal
• hexagonal
• trigonal
• monoclinic