Chalcogen, Lanthanoid, Electronic energy gap

• La-Mn-O-Sr
• Eu-O
• Cu-La-O
• Ce-O
• Co-La-O
• values of electronic energy gap
• energy gap for direct transition
• thermal energy gap
• energy gap for indirect transition
• polaron formation energy
• rare earth
• chalcogen
• lanthanoid
• transitional
• orthorhombic
• monoclinic
• tetragonal
• cubic
• trigonal