All 5-vertex, Phase transitions

• Fe-O
• C-H-N-O
• Cu-La-O-Sr
• H-N-O-Se
• Ba-Cu-O-Y
• fusion
• temperature for congruent melting
• structural transitions
• temperature for structural transition
• decomposition
• chalcogen
• transitional
• non-disordered
• disordered
• orthorhombic
• monoclinic
• tetragonal
• triclinic
• hexagonal