Alkali, Chalcogen, Phase transitions

• K-Na-Nb-O
• Na-O-V
• Na-Nb-O
• H-Li-N-O-S
• H-K-O-P
• fusion
• temperature for congruent melting
• structural transitions
• phase diagram
• alkali
• chalcogen
• transitional
• non-disordered
• monoclinic
• orthorhombic
• tetragonal
• cubic
• trigonal