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

• O-Sr-Ti
• Bi-Fe-O
• Mg-O-Zn
• O-Sn-Sr
• O-Sr-Zr
• ternary
• chalcogen
• oxide
• non-disordered
• transitional
• cubic
• tetragonal
• trigonal
• orthorhombic
• hexagonal