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Electron Microscopy Investigation of Magnetization Process in Thin Foils and Nanostructures

Published online by Cambridge University Press:  01 February 2011

Pascale Bayle-Guillemaud ,
Aurelien Masseboeuf ,
Fabien Cheynis ,
Jean-Christophe Toussaint ,
Olivier Fruchart ,
Christophe Gatel ,
Alain Marty  and
Pascale Bayle-Guillemaud
Pascale Bayle-Guillemaud
Affiliation:
[email protected], CEA Grenoble, DRFMC, 17 rue des martyrs, 38054 Grenoble Cedex 9, Grenoble, N/A, France, (33) 4 38 78 27 88, (33) 4 38 78 51 97
Aurelien Masseboeuf
Affiliation:
[email protected], CEA Grenoble, INAC/SP2M, 17 rue des martyrs, Grenoble Cedex 9, 38054, France
Fabien Cheynis
Affiliation:
[email protected], CNRS, Institut Neel/MNM, Building D, BP166, F-38042 Grenoble Cedex 9, Grenoble, N/A, France
Jean-Christophe Toussaint
Affiliation:
[email protected], CNRS, Institut Neel/MNM, Building D, BP166, F-38042 Grenoble Cedex 9, Grenoble, N/A, France
Olivier Fruchart
Affiliation:
[email protected], CNRS, Institut Neel/MNM, Building D, BP166, F-38042 Grenoble Cedex 9, Grenoble, N/A, France
Christophe Gatel
Affiliation:
[email protected], CEA Grenoble, INAC/SP2M, 17 rue des martyrs, Grenoble Cedex 9, 38054, France
Alain Marty
Affiliation:
[email protected], CEA Grenoble, INAC/SP2M, 17 rue des martyrs, Grenoble Cedex 9, 38054, France
Pascale Bayle-Guillemaud
Affiliation:
[email protected], CEA Grenoble, INAC/SP2M, 17 rue des martyrs, Grenoble Cedex 9, 38054, France
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Abstract

This paper presents investigations of magnetization configuration evolution during in-situ magnetic processes in materials exhibiting planar and perpendicular magnetic anisotropy. Transmission electron microscopy has been used to perform magnetic imaging. Fresnel contrasts in Lorentz Transmission Electron Microscopy (LTEM) and phase retrieval methods such as Transport of Intensity Equation (TIE) solving or electron holography have been implemented. These techniques are sensitive to magnetic induction perpendicular to the electron beam and can give access to a spatially resolved (resolution better than 10 nm) mapping of magnetic induction distribution and could be extended to dynamical studies during in-situ observation. Thin foils of FePd alloys with a strong perpendicular magnetic anisotropy (PMA) and self-assembled Fe dots are presented. Both are studied during magnetization processes exhibiting the capacities of in-situ magnetic imaging in a TEM.

Keywords

transmission electron microscopy (TEM)magnetic propertiesnanostructure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1026: Symposium C – Quantitative Electron Microscopy for Materials Science , 2007 , 1026-C22-04
Copyright
Copyright © Materials Research Society 2008

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