Alkaline, Chalcogen, Transitional, Pressure for structural transition

• O-Sr-W
• Ba-O-W
• B-Cu-O-Sr
• Ba-Cu-O-Y
• Ca-O-W
• chalcogen
• transitional
• alkaline
• non-disordered
• oxide
• tetragonal
• orthorhombic
• monoclinic
• trigonal
• cubic