Chalcogen, Non-disordered, Oxide, Ternary, Energy gap for indirect transition

• O-Sr-Ti
• O-Sr-Zr
• Gd-O-S
• Ca-Ge-O
• Ba-O-Sn
• ternary
• non-disordered
• oxide
• chalcogen
• transitional
• cubic
• tetragonal
• trigonal
• orthorhombic
• monoclinic