Chalcogen, Nonmetal, Oxide, Dielectric loss tangent, Trigonal

• Bi-Fe-O
• Bi-Na-O-Ti
• Nb-O-Pb-Ti-Zn
• Nb-O-Pb-Ti-Zr
• Ba-O-Ti-Zr
• nonmetal
• oxide
• chalcogen
• transitional
• ferroelectric