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The origin of the surface field enhanced coercive field in nanophase Fe73.5Cu1Nb3Si15.5B7 ribbon (CROSBI ID 110524)

Prilog u časopisu | izvorni znanstveni rad

Sabolek, Stjepan ; Babić, Emil ; Kušević, Ivica ; Šušak, Marko ; Stanić, Denis The origin of the surface field enhanced coercive field in nanophase Fe73.5Cu1Nb3Si15.5B7 ribbon // Fizika A & B, 15 (2006), 1; 1-16-1333-8390

Podaci o odgovornosti

Sabolek, Stjepan ; Babić, Emil ; Kušević, Ivica ; Šušak, Marko ; Stanić, Denis

engleski

The origin of the surface field enhanced coercive field in nanophase Fe73.5Cu1Nb3Si15.5B7 ribbon

The influence of surface fields Hp (generated with either direct or alternating core-current) on soft magnetic properties of amorphous and nanocrystalline Fe73.5Cu1Nb3Si15.5B7 ribbon has been studied. While in amorphous ribbon the coercive field Hc decreases with Hp, in the same optimally annealed ribbon (Hc = 1.3 A/m, Mm  Ms) Hc increases with Hp and the hysteresis loss E decreases with Hp for all explored types of Hp (static and dynamic with different phases in respect to that of the magnetizing field H). The unexpected increase of Hc in nanocrystalline ribbon is associated to the influence of Hp on the surface and main (inner) domain structure. The model is developed which takes into account this interaction and explains all the experimental results. The probable adverse effect of the external fields with configurations similar to those of Hp on the performance of such ribbons is briefly discussed and some procedures which can prevent these effects are proposed.

Hysteresis loop ; Domain structure ; Domain wall pinning ; Coercive field ; Core current

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Podaci o izdanju

15 (1)

2006.

1-16-1333-8390

objavljeno

1333-8390

Povezanost rada

Fizika