Probing punctual magnetic singularities during magnetization process in FePd films

Details Probing punctual magnetic singularities during magnetization process in FePd films Probing punctual magnetic singularities during magnetization process in FePd films

2009-09-25

arxiv.org/abs/0909.4645v1

Physics

Condensed Matter

Materials Science

Scientific paper

We report the use of Lorentz microscopy to observe the domain wall structure during the magnetization process in FePd thin foils. We have focused on the magnetic structure of domain walls of bubble-shaped magnetic domains near saturation. Regions are found along the domain walls where the magnetization abruptly reverses. Multiscale magnetic simulations shown that these regions are vertical Bloch lines (VBL) and the different bubble shapes observed are then related to the inner structure of the VBLs. We were thus able to probe the presence of magnetic singularities as small as Bloch points in the inner magnetization of the domain walls.

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