H. Stepankova et al., FE-57 NMR-STUDY OF MAGNETIZATION PROCESSES IN BARIUM HEXAFERRITES, Journal of magnetism and magnetic materials, 158, 1996, pp. 393-394
NMR spectra of Fe-57 nuclei in single crystals of BaFe12O19 and Ba(Fe2
-xCox)Fe16O27 (x = 0, 0.8) were measured at 4.2 K. The field dependenc
e of the resonant frequency at iron site 4f(VI)(R) in external magneti
c fields parallel and perpendicular to the hexagonal axis was used to
trace the magnetization processes. The change of the easy direction wi
th Co content was determined from the results.