Magnetic bubbles in FePd thin films near saturation

Thomas Jourdan (1) , Aurélien Masseboeuf (2, 3) , Alain Marty (4) , Frederic Lançon (2) , Pascale Bayle-Guillemaud (2)

1 LSIM - Laboratory of Atomistic Simulation
2 INAC - Institut Nanosciences et Cryogénie
3 CEMES - Centre d'élaboration de matériaux et d'études structurales
4 NM - Nanostructures et Magnétisme

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.

Mots clés: micromagnetism; multiscale simulation; vertical bloch lines; loretnz microscopy

Domaines: Instrumentations et Détecteurs [physics.ins-det]; Science des matériaux [cond-mat.mtrl-sci]

Thomas Jourdan, Aurélien Masseboeuf, Alain Marty, Frederic Lançon, Pascale Bayle-Guillemaud. Magnetic bubbles in FePd thin films near saturation. Journal of Applied Physics, 2009, 106, pp.073913. ⟨10.1063/1.3243318⟩. ⟨hal-00424242⟩