Chalcogen, Conductor, Disordered, Semiconductor, Sound velocity

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