Alkaline, Keszler

• Ba-Cu-F-Te
• Ba-Cu-F-S
• Ba-Cu-F-Se
• Ba-Cu-S
• B-O-Sc-Sr
• structural properties
• electronic and electrical properties
• optical properties
• phase transitions
• conductivity or resistivity
• alkaline
• chalcogen
• metalloid
• non-disordered
• trigonal
• tetragonal
• monoclinic
• orthorhombic
• hexagonal