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Article Dans Une Revue Journal of Applied Physics Année : 2013

Magnetoresistance in magnetic nanoconstrictions: The role of structural defects Magnetoresistance in magnetic nanoconstrictions: The role of structural defects

Résumé

The resistance of a ferromagnetic cylindrical Ni nano-constriction has been measured as a function of the external magnetic field. Typical profiles of the resistance versus external field are observed with irreversible jumps separated by stable plateaus, showing systematic slow relaxation effects. An interpretation in terms of magnetomechanical strain at the level of the constriction is proposed. This scenario allows the slow relaxation behaviour to be understood in terms of displacement of dislocations or similar metastable structural defects. V C 2013 AIP Publishing LLC. [http://dx.doi.org/10.1063/1.4803702]

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hal-01128122 , version 1 (09-03-2015)

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Nicolas Biziere, M.-C Clochard, Pham Do, J.-E Wegrowe, M Viret. Magnetoresistance in magnetic nanoconstrictions: The role of structural defects Magnetoresistance in magnetic nanoconstrictions: The role of structural defects. Journal of Applied Physics, 2013, pp.173910. ⟨10.1063/1.4803702⟩. ⟨hal-01128122⟩
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