Chalcogen, Fe-O, Octahedron 6-vertex, Phase transitions

• Bi-Fe-O
• Cu-Fe-O
• Fe-O-V
• Fe-H-O-P
• fusion
• temperature for congruent melting
• structural transitions
• temperature for structural transition
• pressure for structural transition
• chalcogen
• transitional
• disordered
• oxide
• cubic
• monoclinic
• orthorhombic
• trigonal
• tetragonal