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

• O-Pb-Ti-Zr
• Mg-Nb-O-Pb-Ti
• La-O-Pb-Ti-Zr
• Nb-O-Pb-Ti-Zn
• structural transitions
• temperature for structural transition
• fusion
• temperature for congruent melting
• pressure for structural transition
• transitional
• chalcogen
• disordered
• oxide
• nonmetal
• cubic
• tetragonal
• monoclinic
• trigonal
• orthorhombic