(Ti0.5Nb0.5)2Bi3O9 tI28 139, Nonmetal

• Bi-Nb-O-Sr
• Bi-O-Sr-Ta
• Ba-Bi-Nb-O
• Bi-La-Nb-O-Sr
• Ba-Bi-O-Sr-Ta
• electronic and electrical properties
• permittivity (dielectric constant)
• phase transitions
• structural transitions
• temperature for structural transition
• transitional
• nonmetal
• chalcogen
• pnictogen
• alkaline
• tetragonal
• orthorhombic