Lorentz transmission electron microscopy on NiFe/Cu/Co/NiFe/MnNi active spin valve elements

In situ magnetoresistance measurements on lithographically defined spin-valve elements were performed by means of Lorentz transmission electron microscopy. The observation of a magnetic domain structure and the simultaneous magnetoresistance measurement by applying controlled field and controlled cu...

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Bibliographic Details
Published in:Applied physics letters 1997-10, Vol.71 (14), p.2032-2034
Main Authors: Portier, X., Petford-Long, A. K., Doole, R. C., Anthony, T. C., Brug, J. A.
Format: Article
Language:English
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Summary:In situ magnetoresistance measurements on lithographically defined spin-valve elements were performed by means of Lorentz transmission electron microscopy. The observation of a magnetic domain structure and the simultaneous magnetoresistance measurement by applying controlled field and controlled current have led to a clear correlation between giant magnetoresistance and changes in the magnetic domain structure. A study of the spin-valve behavior with the increase of the applied current value is also shown.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.119778