Chalcogen, O-Pb-Zr, Phase transitions, Zr-x polyhedra

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