Electronic energy gap, Ho-x polyhedra, Lanthanoid

• Ge-Ho
• Ga-Ho-Ni
• Ho-O-Sb
• B-Ho-O
• H-Ho
• values of electronic energy gap
• energy gap for direct transition
• energy gap for indirect transition
• thermal energy gap
• spin-orbit splitting of valence band
• rare earth
• lanthanoid
• non-disordered
• transitional
• orthorhombic
• monoclinic
• cubic
• hexagonal
• tetragonal