Mg-Nb-O-Pb, Nb-x polyhedra, Structural properties, Transitional

• Mg-Nb-O-Pb-Ti
• Mg-Nb-O-Pb-Zr
• La-Mg-Nb-O-Pb
• Fe-Mg-Nb-O-Pb-W
• oxide
• disordered
• alkaline
• chalcogen
• transitional
• cubic
• trigonal
• tetragonal
• monoclinic
• orthorhombic