Magnetoresistance in magnetic nanoconstrictions: The role of structural defects

N. Biziere; M. C. Clochard; Pham Do Chung; J. E. Wegrowe; M. Viret

doi:10.1063/1.4803702

Magnetoresistance in magnetic nanoconstrictions: The role of structural defects

N. Biziere
, M. C. Clochard
, Pham Do Chung
, J. E. Wegrowe
, M. Viret

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Article number	173910
Journal	Journal of Applied Physics
Volume	113
Issue number	17
DOIs	https://doi.org/10.1063/1.4803702
Publication status	Published - 7 May 2013

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title = "Magnetoresistance in magnetic nanoconstrictions: The role of structural defects",

abstract = "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.",

author = "N. Biziere and Clochard, \{M. C.\} and \{Do Chung\}, Pham and Wegrowe, \{J. E.\} and M. Viret",

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AU - Biziere, N.

AU - Clochard, M. C.

AU - Do Chung, Pham

AU - Wegrowe, J. E.

AU - Viret, M.

PY - 2013/5/7

Y1 - 2013/5/7

N2 - 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.

AB - 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.

U2 - 10.1063/1.4803702

DO - 10.1063/1.4803702

M3 - Article

AN - SCOPUS:84877757170

SN - 0021-8979

VL - 113

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 17

M1 - 173910

ER -

Magnetoresistance in magnetic nanoconstrictions: The role of structural defects

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