Coercive electric field, Ferroelectric, Transitional, Orthorhombic

• Bi-O-Sr-Ta
• Bi-O-Sr-Ti
• K-Na-Nb-O
• Bi-Co-Fe-O-Ti
• Bi-Fe-O-Sr-Ti
• ferroelectric
• transitional
• chalcogen
• nonmetal
• pnictogen