Alkali, Ternary, Transitional, Phase transitions, Trigonal

• Li-O-Ta
• Br-Co-Rb
• Ag-I-Rb
• Li-Nb-O
• Na-Nb-O
• fusion
• temperature for congruent melting
• structural transitions
• temperature for structural transition
• pressure for structural transition
• transitional
• ternary
• alkali
• non-disordered