Abd shukor, Chalcogen

• Ba-Cu-Eu-O
• Ca-La-Mn-O
• Mn-Nd-O-Sr
• Ba-Cu-Gd-O-Sr-Zn
• Ba-Cu-Gd-O-Sr
• superconductivity
• structural properties
• mechanical properties
• values of electron-phonon interaction parameter
• electronic and electrical properties
• chalcogen
• transitional
• alkaline
• rare earth
• lanthanoid
• tetragonal
• orthorhombic
• cubic
• trigonal