Alkaline, Chalcogen, Disordered, Ba-Fe-O, Quadrupole splitting

• Ba-Cu-Fe-O-Y
• Ba-Fe-La-O
• Ba-F-Fe-O
• Ba-Fe-O-Ti
• transitional
• chalcogen
• alkaline
• disordered
• oxide
• hexagonal
• cubic
• tetragonal
• orthorhombic
• trigonal