Chalcogen, Conductor, Transitional, Wavenumber of optical phonon

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