The Magnetic Hyperfine Field for 119Sn Atoms in GdMnSi Intermetallic Compound Zero Contribution from 3d Moments

The magnetic hyperfine interaction for 119Sn impurity atoms in the GdMnSi host has been studied by Mossbauer spectroscopy. The hyperfine field for Sn atoms at 5 K is Bhf = (−27.6 ± 0.3) T. The temperature dependences of Bhf and magnetization are practically identical. As follows from the comparison of the results to data for GdCoSi host and an analysis of the satellite structure of the spectrum in Gd0.95Y0.05MnSi host, the contribution to the transferred hyperfine field from 3d moments in GdMnSi vanishes. Both experimental results and obtained empirical function of the radial dependence of the gadolinium contribution to Bhf emphasize the short-range nature of the hyperfine interaction for Sn impurity atoms in Gd-based magnetic alloys. [Russian Text Ignored].