Alkaline, Chalcogen, Bb21m

• Bi-Ca-O-Ti
• Ca-O-Ru
• Bi-O-Sr-Ta
• Bi-Nb-O-Sr-V
• Ca-O-Ru-Ti
• electronic and electrical properties
• permittivity (dielectric constant)
• magnetic properties
• conductivity or resistivity
• electric polarization
• alkaline
• transitional
• chalcogen
• nonmetal
• pnictogen
• orthorhombic