FE-57 NMR IN BAFE2-W HEXAGONAL FERRITE

Fe-57 NMR spectra from magnetic domains of BaFe22+Fe163+O27 hexaferrit e single crystal were measured at 4.2 K using the conventional spin ec ho technique. External magnetic fields up to 3T parallel and perpendic ular to the hexagonal axis were applied to separate the overlapped NMR lines and to find their correspondence to the seven nonequivalent lat tice sites occupied by Fe3+ ions. A pronounced satellite structure of lines from tetrahedral sites was found. These results were analyzed wi th respect to the distribution of Fe2+ ions among the iron sites.