Chalcogen, Ferroelectric, Nonmetal, Oxide, Real part of permittivity

• Ba-O-Ti
• Mg-Nb-O-Pb-Ti
• Bi-Fe-O
• Ba-Ca-O-Ti-Zr
• Bi-Na-O-Ti
• oxide
• nonmetal
• ferroelectric
• chalcogen
• transitional
• tetragonal
• orthorhombic
• cubic
• trigonal
• monoclinic