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Abstract

In the present work, we performed the ultra-rapid annealing (URA) process for amorphous Fe78Ni8B14 melt-spun ribbons in order to obtain fine excellent microstructure assuring the best soft magnetic properties. Several microscopic methods mainly based on transmission electron microscopy (TEM) and Lorentz TEM (L-TEM) were applied for detailed studies of the microstructure and magnetic domains structure. The investigation revealed that the optimized parameters of the URA process (500°C/0.5-5 s) lead to outstanding soft magnetic properties. A mixture containing close to 50% amorphous phase and 50% α-Fe nanocrystals of size up to 30 nm has been already obtained after annealing for 3 s. These annealing conditions appear to be the most suitable in terms of microstructure providing the best magnetic properties.
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Authors and Affiliations

Wojciech Maziarz
1
ORCID: ORCID
A. Kolano-Burian
2
ORCID: ORCID
M. Kowalczyk
3
ORCID: ORCID
P. Błyskun
3
ORCID: ORCID
R. Chulist
1
ORCID: ORCID
P. Czaja
1
ORCID: ORCID
M. Szlezynger
1
ORCID: ORCID
A. Wójcik
1
ORCID: ORCID

  1. Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta Str., 30-059 Krakow, Poland
  2. Lukasiewicz Research Network – institute of non-Ferrous Metals, 5 Generała Józefa Sowińskiego str., 44-121 Gliwice, Poland
  3. Warsaw University of Technology, the Faculty of Materials Science and Engineering, 141 Wołoska stR., 02-507 Warszawa, Poland

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