Chalcogen, Conductor, Transitional, Transverse sound velocity

• Ba-Cu-O-Y
• Bi-Ca-Cu-O-Sr
• O-Sr-Ti
• Ba-Cu-Eu-O
• O-W-Zn
• conductor
• chalcogen
• transitional
• semiconductor
• oxide
• cubic
• orthorhombic
• tetragonal
• monoclinic
• trigonal