Alkali, Disordered, Transitional, Phase transitions, Tetragonal

• K-Na-Nb-O
• Bi-Na-O-Ti
• As-Ba-Fe-K
• Ba-Bi-Na-O-Ti
• Ba-Na-Nb-O
• temperature for congruent melting
• fusion
• structural transitions
• temperature for structural transition
• alkali
• transitional
• disordered
• chalcogen
• oxide