B-x polyhedra, Disordered, Electronic and electrical properties, Trigonal

• B-C
• La-Mn-O-Sr
• B
• B-Li
• Ca-La-Mn-O
• conductivity or resistivity
• electrical conductivity
• electronic energy gap
• effective mass
• permittivity (dielectric constant)
• disordered
• metalloid
• transitional
• chalcogen
• conductor