METHODOLOGY OF INTERFACIAL REGIONS IN FEMCUB-TYPE NANOCRYSTALS

A fitting model based on the use of two independent blocks resulting f rom distributions of hyperfine fields and one sextuplet of Lorentzian lines is introduced to simulate Mossbauer spectra of FeMCuB-type nanoc rystals. It is discussed for the spectra of M = Mo, Nb, and Ti alloys in the first stage of crystallization. One distribution is ascribed to the amorphous residual matrix, while the other is attributed to Fe at oms located in the interface zone. The sextuplet of Lorentzian lines i dentifies alpha-Fe crystalline phase. Three-dimensional mappings of hy perfine field distributions and models of structural arrangement and t opography of hyperfine interactions are briefly reported.