Conductor, Disordered, Oxide, Transitional, Wavenumber of optical phonon

• Ba-Cu-O-Y
• Bi-Fe-O
• O-Zn
• Fe-O
• Fe-Ni-O
• oxide
• chalcogen
• conductor
• disordered
• transitional
• orthorhombic
• cubic
• tetragonal
• trigonal
• hexagonal