As-F-Fe-La-O, Chalcogen, F-x polyhedra

• As-F-Fe-La-O-Sb
• superconductivity
• electronic and electrical properties
• magnetic properties
• superconducting transition temperature
• conductivity or resistivity
• fluoride
• diamagnetic
• chalcogen
• disordered
• halogen
• tetragonal
• orthorhombic