On the conditions eliciting a detailed structure in the hyperfine field distribution at 57Fe nuclei

A technique has been developed to extract a fine structure in the hyperfine field distribution (HFD) at Mössbauer resonating nuclei such as 57Fe. It has been shown that the NORMOS program package widely spread for fitting Mössbauer spectra may be used for this purpose under some restrictions for variable parameters. In a case of iron and its some alloys both as a bulk and aerosol nanoparticles, applying the technique has permitted to bring out a discrete structure in HFD at 57Fe nuclei caused with a set of weak magnetic interactions.

► Revealing a fine structure in hyperfine field distribution (HFD) at 57Fe nuclei.
► Application of the NORMOS program for fitting Mössbauer spectra.
► Restrictions for variable parameters have been established.
► Examples of the brought-out discrete structure in HFD at 57Fe nuclei.