SCIENCE SPIN-OFFS

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Probing domain walls in cylindrical magnetic nanowires with electron holography

Michal Stano, Ségolène Jamet, Jean-Christophe Toussaint, Sebastian Bochmann, Julien Bachmann, Aurélien Masseboeuf, Christophe Gatel, Olivier Fruchart

(Submitted on 1 Sep 2016)

We probe magnetic domain walls in cylindrical soft magnetic nanowires using electron holography. We detail the modelling of expected contrast for both transverse and Bloch point domain walls and provide comparison with experimental observations performed on NiCo nanowires, involving also both magnetic and electrostatic contribution to the electron holography map. This allows the fast determination of the domain wall type without the need for uneasy and time-consuming experimental removal of the electrostatic contribution. Finally, we describe and implement a new efficient algorithm for calculating the magnetic contrast.


http://arxiv.org/abs/1609.00255