Bi-O-Sr-Ta, Bi-x polyhedra, Orthorhombic

• Bi-O-Pr-Sr-Ta
• Ba-Bi-O-Sr-Ta
• Bi-Eu-O-Sr-Ta
• Bi-O-Si-Sr-Ta
• electronic and electrical properties
• permittivity (dielectric constant)
• structural properties
• electric polarization
• phase transitions
• alkaline
• pnictogen
• chalcogen
• disordered
• transitional