Contribution of the magnetic field induced by the current passing through a spin-valve element

X. Portier; A. K. Petford-Long; T. C. Anthony; J. A. Brug

doi:10.1016/S0304-8853(98)00131-0

Contribution of the magnetic field induced by the current passing through a spin-valve element

X. Portier^*, A. K. Petford-Long, T. C. Anthony, J. A. Brug

^*Corresponding author for this work

Materials Science and Engineering

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

5 Scopus citations

Abstract

In situ experiments in a Lorentz microscope have been performed on active spin-valve elements, and a correlation between magnetoresistance and the magnetic domain structure is shown. The presence of a magnetic field induced by the applied current is clearly demonstrated. A simple model is presented, which is in good agreement with the experimental data. In addition, the effect of stray-field coupling between the ferromagnetic layers, arising because of the free magnetic poles at the edges of the element, has been observed.

Original language	English (US)
Pages (from-to)	145-153
Number of pages	9
Journal	Journal of Magnetism and Magnetic Materials
Volume	187
Issue number	2
DOIs	https://doi.org/10.1016/S0304-8853(98)00131-0
State	Published - Aug 14 1998

Funding

This study has been supported by Hewlett–Packard Laboratories in Palo Alto through a collaboration with the Department of Materials in Oxford University. The authors are very grateful to B. Garcia for his help in fabricating the masks for the lithographic procedure. The authors wish to thank Dr E. Tsymbal (Oxford University) for helpful discussions and R.C. Doole for his technical assistance. Dr A.K. Petford-Long is grateful to the Royal Society for financial support.

Keywords

Giant magnetoresistance
Lorentz microscopy
Spin valves

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/S0304-8853(98)00131-0

Cite this

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title = "Contribution of the magnetic field induced by the current passing through a spin-valve element",

abstract = "In situ experiments in a Lorentz microscope have been performed on active spin-valve elements, and a correlation between magnetoresistance and the magnetic domain structure is shown. The presence of a magnetic field induced by the applied current is clearly demonstrated. A simple model is presented, which is in good agreement with the experimental data. In addition, the effect of stray-field coupling between the ferromagnetic layers, arising because of the free magnetic poles at the edges of the element, has been observed.",

keywords = "Giant magnetoresistance, Lorentz microscopy, Spin valves",

author = "X. Portier and Petford-Long, {A. K.} and Anthony, {T. C.} and Brug, {J. A.}",

note = "Funding Information: This study has been supported by Hewlett–Packard Laboratories in Palo Alto through a collaboration with the Department of Materials in Oxford University. The authors are very grateful to B. Garcia for his help in fabricating the masks for the lithographic procedure. The authors wish to thank Dr E. Tsymbal (Oxford University) for helpful discussions and R.C. Doole for his technical assistance. Dr A.K. Petford-Long is grateful to the Royal Society for financial support.",

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doi = "10.1016/S0304-8853(98)00131-0",

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AU - Portier, X.

AU - Petford-Long, A. K.

AU - Anthony, T. C.

AU - Brug, J. A.

N1 - Funding Information: This study has been supported by Hewlett–Packard Laboratories in Palo Alto through a collaboration with the Department of Materials in Oxford University. The authors are very grateful to B. Garcia for his help in fabricating the masks for the lithographic procedure. The authors wish to thank Dr E. Tsymbal (Oxford University) for helpful discussions and R.C. Doole for his technical assistance. Dr A.K. Petford-Long is grateful to the Royal Society for financial support.

PY - 1998/8/14

Y1 - 1998/8/14

N2 - In situ experiments in a Lorentz microscope have been performed on active spin-valve elements, and a correlation between magnetoresistance and the magnetic domain structure is shown. The presence of a magnetic field induced by the applied current is clearly demonstrated. A simple model is presented, which is in good agreement with the experimental data. In addition, the effect of stray-field coupling between the ferromagnetic layers, arising because of the free magnetic poles at the edges of the element, has been observed.

AB - In situ experiments in a Lorentz microscope have been performed on active spin-valve elements, and a correlation between magnetoresistance and the magnetic domain structure is shown. The presence of a magnetic field induced by the applied current is clearly demonstrated. A simple model is presented, which is in good agreement with the experimental data. In addition, the effect of stray-field coupling between the ferromagnetic layers, arising because of the free magnetic poles at the edges of the element, has been observed.

KW - Giant magnetoresistance

KW - Lorentz microscopy

KW - Spin valves

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Contribution of the magnetic field induced by the current passing through a spin-valve element

Abstract

Funding

Keywords

ASJC Scopus subject areas

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