Alkaline, Chalcogen, Non-disordered, Oxide, Pressure for structural transition

• Ba-Cu-O-Y
• Ba-O
• Be-O
• O-Sr-Ti
• Ca-O-Ru
• oxide
• alkaline
• chalcogen
• non-disordered
• transitional
• orthorhombic
• cubic
• tetragonal
• monoclinic
• hexagonal