Chalcogen, Spontaneous polarization - temperature diagram

• Nb-O-Pb-Ti-Zn
• Co-Mn-O-W
• Li-Na-Nb-O
• H-K-O-P
• Ba-O-Ti
• chalcogen
• ferroelectric
• nonmetal
• transitional
• oxide
• orthorhombic
• tetragonal
• trigonal
• monoclinic
• cubic