High resolution magnetic and electric hyperfine interaction distributi
ons are determined for single crystal (MnNi)-Mn-54 with diffused impur
ity concentrations of 0.14 and 0.40 at%, and for a 0.1 mum layer of (C
oFe)-Co-60 co-plated onto single crystal Fe. High quality gamma detect
ed nuclear spin echoes recorded for the (CoFe)-Co-60 specimen demonstr
ate that a reduced influence of the RF skin effect far outweighs any m
agnetic hyperfine field interaction broadening associated with the co-
plating process.