Chalcogen, Conductor, Transitional, Wavenumber of longitudinal optical phonon

• Ba-Cu-O-Y
• Fe-H-K-Mo-O
• Cu-La-O
• Ce-O-V
• O-Zn
• transitional
• chalcogen
• conductor
• semiconductor
• oxide
• tetragonal
• orthorhombic
• cubic
• trigonal
• monoclinic