Chalcogen, Disordered, Transitional, Phase transitions

• Ba-O-Ti
• Fe-Te
• Fe-O
• Ca-La-Mn-O
• Fe-Se
• fusion
• temperature for congruent melting
• structural transitions
• temperature for structural transition
• pressure for structural transition
• transitional
• chalcogen
• disordered
• oxide
• cubic
• orthorhombic
• tetragonal
• monoclinic
• trigonal