Alkali, Disordered, Transitional, Phase transitions, Trigonal

• Bi-Na-O-Ti
• Li-O-Ta
• Ag-I-Rb
• Li-Nb-O
• Li-O-V
• fusion
• temperature for congruent melting
• structural transitions
• temperature for structural transition
• decomposition
• disordered
• alkali
• transitional
• chalcogen