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Magnetic bubbles in FePd thin films near saturation

Research paper by Thomas Jourdan, Aurélien Masseboeuf, Alain Marty, Frederic Lançon, Pascale Bayle-Guillemaud

Indexed on: 19 Oct '09Published on: 19 Oct '09Published in: Physics - Materials Science



Abstract

The structure of domain walls delimiting magnetic bubbles in L10 FePd thin layers is described on the basis of Lorentz transmission electron microscopy (LTEM) and multiscale magnetic simulations. Images obtained by high resolution LTEM show the existence of magnetization reversal areas inside domain walls, called vertical Bloch lines (VBLs). Combining these observations and multiscale simulations on various geometries, we can identify the structure of these VBLs, notably the presence or not of magnetic singularities.