Bb21m, Chalcogen, Ferroelectric, Transitional

• Bi-Ca-O-Ti
• Bi-O-Sr-Ta
• Bi-Nb-O-Sr-V
• Bi-Eu-O-Sr-Ta
• Bi-La-O-Sr-Ti
• electronic and electrical properties
• permittivity (dielectric constant)
• electric polarization
• ferroelectric hysteresis
• conductivity or resistivity
• transitional
• pnictogen
• chalcogen
• ferroelectric
• nonmetal
• orthorhombic
• trigonal
• cubic