Chalcogen, Quinary, Transitional, Phase transitions

• Mg-Nb-O-Pb-Ti
• Nb-O-Pb-Ti-Zn
• La-O-Pb-Ti-Zr
• Bi-Ca-Cu-O-Sr
• Ba-Ca-O-Ti-Zr
• fusion
• temperature for congruent melting
• structural transitions
• temperature for structural transition
• transitional
• chalcogen
• quinary
• disordered
• orthorhombic
• monoclinic
• tetragonal
• cubic
• trigonal