Bi-F-La-O-S, Electronic and electrical properties, F-x polyhedra

• Bi-F-La-O-S-Se
• Bi-Ca-F-La-O-S
• Bi-F-La-Mg-O-S
• conductivity or resistivity
• electrical resistivity
• activation energy
• values of activation energy
• Fermi surface
• halogen
• chalcogen
• disordered
• fluoride
• lanthanoid
• tetragonal
• monoclinic