Influence of nanocrystalline microstructure on the magnetic properties of a wire shaped ferromagnetic alloy
IEEE Transactions on Magnetics, Vol.29(6, Part 1), pp.2673-2675
1993
The magnetic properties of nanocrystalline Fe73.5Cu1Nb3Si13.5B9, alloy wire are reported for the first time. The evolution of the structure and of the magnetic properties of the wire, which was initially cast into the amorphous state, were studied as a function of annealing temperature, Tann. In the as-cast glassy state, the wires showed typical bistable magnetic behaviour while, after devitrification to a nanocrystalline structure based on a-FeSi grains of mean diameter approx. 10nm(Tann =550°C), the coercivity and magnetostriction decreased substantially and bistability was lost. The bistability could however, be recovered on application of a torsional stress. Treatment at Tann > 600°C lead to grain growth and eventually to precipitation of ultrafine boride, resulting in drastic magnetic hardening.
- Influence of nanocrystalline microstructure on the magnetic properties of a wire shaped ferromagnetic alloy
- C Gomez-Polo (Author)Ayodele Olofinjana (Author)P Marin (Author)M Vazquez (Author)H A Davies (Author)
- IEEE Transactions on Magnetics, Vol.29(6, Part 1), pp.2673-2675
- Institute of Electrical and Electronics Engineers
- 1993
- 10.1109/20.280944
- 0018-9464
- School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
- English
- 99448846002621
- Journal article
885
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- Physics, Applied