Electron Holography study of the local magnetic switching process in MTJs

Elsa Javon (1) , Christophe Gatel (1) , Aurélien Masseboeuf (1) , Etienne Snoeck (1)

1 CEMES - Centre d'élaboration de matériaux et d'études structurales

We present an electron holography experiment enabling the local and quantitative study of magnetic properties in magnetic tunnel junction. The junction was fully characterized during the switching process and each possible magnetic configuration was highlighted with magnetic induction maps. No magnetic coupling was found between the two layers. We plot a local hysteresis loop that was compared with magnetometry measurement at the macroscopic scale confirming the validity of the local method.

Mots clés: Electron Holography; Magnetic Tunnel Junction

Domaines: Instrumentations et Détecteurs [physics.ins-det]

Elsa Javon, Christophe Gatel, Aurélien Masseboeuf, Etienne Snoeck. Electron Holography study of the local magnetic switching process in MTJs. Journal of Applied Physics, 2010, 107, pp.09D310. ⟨10.1063/1.3358219⟩. ⟨hal-00429224⟩