Electronic and electrical properties, Na-x polyhedra

• Na-Nb-O
• Co-Na-O
• K-Na-Nb-O
• Bi-Na-O-Ti
• Na-O-V
• electrical conductivity
• effective mass
• electronic energy gap
• values of electronic energy gap
• permittivity (dielectric constant)
• alkali
• chalcogen
• transitional
• non-disordered
• monoclinic
• orthorhombic
• cubic
• trigonal
• triclinic