Chalcogen, Conductor, Semiconductor, Transitional, Sound velocity

• Ba-Cu-O-Y
• Ca-La-Mn-O
• Cu-La-O-Sr
• Bi-Ca-Cu-O-Sr
• La-Mn-O-Sr
• longitudinal sound velocity
• values of sound velocity
• transverse sound velocity
• transitional
• chalcogen
• conductor
• semiconductor
• disordered
• orthorhombic
• cubic
• tetragonal
• monoclinic
• trigonal