Hyperfine Interactions of 8Li in Ferromagnetic Single Crystal Fe

The hyperfine interactions of 8Li implanted in single crystal Fe have been studied using the β-NMR technique. One kind of hyperfine field Bhf was found. Since no dipolar field was observed, 8Li nuclei are suggested to sit in substitutional sites. The Bhf and the spin-lattice relaxation time T1 were observed as functions of temperature. The experimental Bhf and T1 were compared with the theoretical predictions from the first principles KKR-band-structure calculations. While predicted Bhf for the substitutional site is consistent with the experiment, predicted T1 cannot reproduce the experiment well.