Abstract
The possibility of application of the local atomic displacement approximation (LADA) for describing the low-field part (Hhf ≤ 24.0 T) of the hyperfine-field distribution P(H) in the metastable Fe23B6 phase produced by mechanical alloying has been studied. Within the LADA, the appearance of Mossbauer contributions that are not typical of the fcc Cr23C6-type structure in the P(H) function of the mechanically alloyed Fe23B6 phase is related to a decrease in the interatomic spacings by ΔrFe-B/rFe-B ≤ 0.10 for some local configurations of iron and boron atoms within the unit cell.
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