The magnetization process in an array of 2 μm × 2 μm × 0.04 μm permalloy particles fabricated on a 100 nm carbon membrane was investigated by means of high-resolution Lorentz microscopy and electron holography in magnetic fields parallel and perpendicular to the film surface. For perpendicular fields, the magnetization reversal was found to begin with the nucleation of a vortex which gradually transformed into a closure domain configuration. At the remanent state, the flux closure was achieved with the generation of a new type of doubled domain wall.
|Number of pages||3|
|Journal||Journal of Applied Physics|
|Issue number||8 PART 2A|
|Publication status||Published - 1996 Apr 15|
ASJC Scopus subject areas
- Physics and Astronomy(all)