Alkaline, Chalcogen, Pressure for structural transition

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