Mg-Nb-O-Pb-Ti, Nb-x polyhedra, Phase transitions

• Mg-Nb-O-Pb-Ti-Zn-Zr
• In-Mg-Nb-O-Pb-Ti
• Bi-Mg-Nb-O-Pb-Ti
• Mg-Nb-O-Pb-Ti-W
• structural transitions
• temperature for structural transition
• temperature for congruent melting
• fusion
• alkaline
• transitional
• chalcogen
• disordered
• nonmetal
• tetragonal
• cubic
• monoclinic
• orthorhombic
• trigonal