Chalcogen, Non-disordered, Oxide, Poisson ratio

• Ba-Cu-O-Y
• Be-O
• Bi-Ca-Cu-O-Sr
• Ca-O-Ti
• Fe-O-Y
• oxide
• non-disordered
• chalcogen
• transitional
• conductor
• cubic
• orthorhombic
• tetragonal
• trigonal
• monoclinic