THE INTERFACIAL STRUCTURE OF NANOCRYSTALLINE FE73.5CU1MO3SI13.5B9 STUDIED BY MOSSBAUER-SPECTROSCOPY

Nanocrystalline Fe73.5Cu1Mo3Si13.5B9 prepared by crystallization of th e amorphous alloy was investigated by using Mossbauer spectroscopy and X-ray diffractometry. The present study focuses on the interfacial co mposition and the important role of the interfacial component in the d evelopment of the nanocrystalline structure. On the basis of a newly d eveloped fitting program, the amorphous phase is denoted by a low fiel d component and a high field one. Upon crystallization, the former, wh ich corresponds to the boundary regions adjacent to the grains become more significant. The different stages associated with the crystalliza tion are discussed.