Fe-Nb-O-Pb, Nb-x polyhedra, Oxide, Tetragonal

• Fe-Nb-O-Pb-Ti
• Fe-La-Na-Nb-O-Pb
• electronic and electrical properties
• thermal and thermodynamic properties
• permittivity (dielectric constant)
• structural properties
• phase transitions
• oxide
• transitional
• disordered
• chalcogen
• antiferromagnetic