Microstructural Study of Fe-Si(Ge)-Nb-Cu-B Finemet Alloys

S. Michalika, b, J. Bednarcikb, K. Brzózkac, P. Sovaka and B. Górkac aInstitute of Physics, P.J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovakia bHASYLAB am DESY, Notkestraß e 85, D-22503 Hamburg, Germany cDepartment of Physics, Technical University of Radom, Krasickiego 54, 26-600 Radom, Poland

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Structural changes in Finemet based alloys invoked by germanium replacement for silicon were investigated using the X-ray diffraction, the X-ray absorption spectroscopy and the Mössbauer spectroscopy. Ge substitution preserves a nanostructural character of annealed samples at temperature 550°C; Specifically the formation of a DO3-type with about 19 at.% of (Si,Ge) was confirmed. The mean size of nanocrystals was estimated to be about 7 nm.

DOI: 10.12693/APhysPolA.118.818 PACS numbers: 61.05.cp, 61.05.C-, 61.46.Hk