Mg-Nb-O-Pb-Zr, Nb-x polyhedra

• Mg-Nb-O-Pb-Ti-Zn-Zr
• electronic and electrical properties
• structural properties
• thermal and thermodynamic properties
• permittivity (dielectric constant)
• phase transitions
• transitional
• chalcogen
• disordered
• alkaline
• oxide
• cubic
• trigonal