Electronic and electrical properties, Er, Non-disordered, Rare earth

• Ba-Cu-Er-O
• Co-Er
• B-C-Er-Ni
• Er-Mn-O
• Er-Si
• effective mass
• electrical conductivity
• electronic energy gap
• values of electronic energy gap
• conductivity or resistivity
• rare earth
• lanthanoid
• non-disordered
• transitional
• orthorhombic
• cubic
• tetragonal
• hexagonal
• monoclinic