Chalcogen, Conductor, Transitional, Longitudinal sound velocity

• Ba-Cu-O-Y
• La-Mn-O-Sr
• Co-Fe-O-Zn
• Ba-Ca-Cu-O-Y
• Ba-Cu-Eu-O
• conductor
• chalcogen
• transitional
• semiconductor
• disordered
• cubic
• orthorhombic
• tetragonal
• monoclinic
• trigonal