Alkali, Disordered, Phase transitions, Tetragonal

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