Abstract

An existence of effects connected with the surface of grains in nanocrystalline FINEMET-like Fe 72 Cu 1.5 Nb 4 Si 13.5 B 9 alloy was verified by investigation of hyperfine and magnetoelastic properties. In the Mössbauer spectra (collected both at room temperature and close to T c of amorphous matrix) a broad, high field component was found, which could be attributed to the grains surface and interface region. Such interpretation is confirmed in magnetostrictive experiment pointing to a high value of surface magnetostriction constant.

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