Alkali, Non-disordered, Phase transitions, Tetragonal

• H-K-O-P
• K-Nb-O
• H-O-P-Rb
• As-Fe-Na
• F-K-Mn
• fusion
• temperature for congruent melting
• structural transitions
• temperature for structural transition
• pressure for structural transition
• alkali
• non-disordered
• chalcogen
• transitional