Electronic and electrical properties, Er-x polyhedra, Non-disordered, Orthorhombic

• Ba-Cu-Er-O
• Ba-Er-O-Zn
• Er-Ni-Sn
• Er-Mn-O
• Al-Er-Ge
• electrical conductivity
• effective mass
• electronic energy gap
• values of electronic energy gap
• conductivity or resistivity
• lanthanoid
• non-disordered
• rare earth
• transitional
• chalcogen