Studies of Hyperfine Fields in Iron Alloys

Abstract

The 57Fe hyperfine field spectra of several bcc iron-rich binary alloys have been studied by the Mössbauer effect, the spin-echo technique, and by frequency-swept nuclear magnetic resonance. The alloys contained low concentrations of Al, Si, Mn, Cr, V, Co, or Ni. By computer analysis, the experimental spectra have been decomposed into component lines, assuming a model where the effects of the individual neighbor shells are additive. The resulting shifts in hyperfine fields due to the three nearest-neighbor shells obtained by the three techniques are compared and discussed.