Chalcogen, Transitional, Phase transitions, Tetragonal

• Ba-O-Ti
• Nb-Se
• Fe-Te
• O-Sr-Ti
• Mg-Nb-O-Pb-Ti
• fusion
• temperature for congruent melting
• structural transitions
• temperature for structural transition
• pressure for structural transition
• chalcogen
• transitional
• oxide
• disordered