Chalcogen, Mg-Nb-O-Pb-Ti, Pb-x polyhedra, Structural 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
• temperature for structural transition
• pressure derivative of transition temperature
• alkaline
• disordered
• chalcogen
• nonmetal
• transitional
• monoclinic
• tetragonal
• cubic
• orthorhombic
• trigonal