Contribution of s-d Interaction to the Internal Magnetic Field in Heusler Alloys

Abstract

Spin echoes and their external magnetic field effects have been observed on Heusler alloys, Cu₂MnAl, Cu₂MnIn and Cu₂MnSn at 4.2°K. The sign of the internal magnetic field at nuclei of the constituent elements has been determined to be negative, and on the basis of the R–K–K–Y interaction semiquantitative agreement between calculated and observed internal magnetic fields has been obtained in Cu₂MnAl, Cu₂MnIn and Cu₂MnSn. The spectra for Cu, Mn and Sn in Cu₂MnSn, In in Cu₂MnIn and Al in Cu₂MnAl have been observed for the first time.