Alkali, Chalcogen, Transitional, Orthorhombic, Phase transitions

• Na-Nb-O
• Na-O-V
• K-Na-Nb-O
• K-Nb-O
• Co-Na-O
• fusion
• temperature for congruent melting
• structural transitions
• temperature for structural transition
• decomposition
• transitional
• alkali
• chalcogen
• non-disordered