Alkali, Oxide, Na-Nb-O, Phase transitions, Tetragonal

• K-Na-Nb-O
• K-Li-Na-Nb-O-Sb
• Ba-Na-Nb-O
• K-Li-Na-Nb-O
• K-Li-Na-Nb-O-Sb-Ta
• structural transitions
• temperature for structural transition
• temperature for congruent melting
• fusion
• transitional
• oxide
• alkali
• chalcogen
• disordered