Conductor, Electronic and electrical properties, Trigonal

• Bi-Fe-O
• La-Mn-O-Sr
• Ca-Cu-O-Ti
• Bi-Na-O-Ti
• Bi-Te
• conductivity or resistivity
• electrical resistivity
• permittivity (dielectric constant)
• electrical conductivity
• electronic energy gap
• conductor
• chalcogen
• semiconductor
• transitional
• disordered