Chalcogen, Pyroelectric, Phase transitions

• In-S-Tl
• Ga-Se-Tl
• O-Pb-Ti
• H-N-O-Se
• Ba-O-Sr-Ti
• structural transitions
• temperature for structural transition
• temperature for congruent melting
• fusion
• pressure for structural transition
• chalcogen
• pyroelectric
• ferroelectric
• nonmetal
• transitional
• tetragonal
• orthorhombic
• monoclinic
• trigonal
• cubic