Determination of Structural Elements Size of the Finemet-type Amorphous Alloy

Abstract

The sizes of structure elements were determined based on X-ray diffraction data in conjunction with simulation and scanning electron microscopy of the highest resolution for three states of the Fe72.5Cu1Nb2Mo1.5Si14B9alloy (amorphous, nanocrystalline, and recrystallized). It is shown that the sizes of the coherent scattering regions and crystallites for the nanocrystalline and recrystallized states have good agreement. It allows us to consider the cluster structure of solid "amorphous" materials as "ultra-nanocrystalline" consisting of crystallites with sizes of several interatomic distances. © 2021 Elsevier B.V.. All rights reserved.