Electronic and electrical properties, Tetragonal, Tetragonal bronze

• Nb-O-Sm-Sr
• K-Nb-O-Pb
• Ba-Fe-Nb-O-Sm
• F-K-Nb-O-Sr
• Nb-O-Pb
• electrical conductivity
• effective mass
• permittivity (dielectric constant)
• electronic energy gap
• values of electronic energy gap
• tetragonal bronze
• transitional
• chalcogen
• oxide
• disordered