CobaltMaghrebV1, Maroc, Analysis, bibRecord, 000160

Magnetic and transport properties of ion beam sputtered CoxCu1-x granular alloys

Identifieur interne : 000160 ( Maroc/Analysis ); précédent : 000159; suivant : 000161

Magnetic and transport properties of ion beam sputtered CoxCu1-x granular alloys

Auteurs : H. Errahmani [Maroc] ; A. Berrada [Maroc] ; G. Schmerber [France] ; A. Dinia [France]

Source :

Vacuum [ 0042-207X ] ; 2000.

RBID : Pascal:00-0215199

Descripteurs français

Pascal (Inist)
- Etude expérimentale, Matériau granulaire, Cobalt alliage, Cuivre alliage, Pulvérisation faisceau ionique, Magnétorésistance géante, Recuit, Effet concentration, Aimantation saturation, Couche mince, Force coercitive, Diffraction RX, 7560E, 7530V, 7570P, Alliage CoCu, Co Cu.

English descriptors

KwdEn :
- Annealing, Cobalt alloys, Coercive force, Copper alloys, Experimental study, Giant magnetoresistance, Granular materials, Ion beam sputtering, Quantity ratio, Saturation magnetization, Thin films, XRD.

Abstract

We report on the transport and magnetic properties of Co_xCu₁-x metallic granular system, with 0.2 < x < 0.25. These samples have been prepared by ion beam sputtering at room temperature on glass substrate. Giant magnetoresistance (GMR) has been observed for all the concentrations studied with an average amplitude around 2% for the as-deposited samples at 300 K. The maximum value has been observed for the Co₂₁Cu₇₉ granular alloy. Above this Co concentration the MR decreases which is attributed to the start of the percolation mechanism. The annealing of Co₂₁Cu₇₉ granular alloy at 450°C leads to a strong increase of the MR to reach 16% after 2 h annealing. The variation of magnetic and transports properties with the Co concentration and annealing time is discussed.

Affiliations:

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 000291
to stream PascalFrancis, to step Curation: 000004
to stream PascalFrancis, to step Checkpoint: 000283
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to stream Main, to step Curation: 000D37
to stream Main, to step Exploration: 000D37
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Pascal:00-0215199

Le document en format XML

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 granular alloys</title>
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 granular alloys</title>
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<term>Experimental study</term>
<term>Giant magnetoresistance</term>
<term>Granular materials</term>
<term>Ion beam sputtering</term>
<term>Quantity ratio</term>
<term>Saturation magnetization</term>
<term>Thin films</term>
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<term>Cobalt alliage</term>
<term>Cuivre alliage</term>
<term>Pulvérisation faisceau ionique</term>
<term>Magnétorésistance géante</term>
<term>Recuit</term>
<term>Effet concentration</term>
<term>Aimantation saturation</term>
<term>Couche mince</term>
<term>Force coercitive</term>
<term>Diffraction RX</term>
<term>7560E</term>
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<front><div type="abstract" xml:lang="en">We report on the transport and magnetic properties of Co<sub>x</sub>
Cu<sub>1</sub>
-x metallic granular system, with 0.2 < x < 0.25. These samples have been prepared by ion beam sputtering at room temperature on glass substrate. Giant magnetoresistance (GMR) has been observed for all the concentrations studied with an average amplitude around 2% for the as-deposited samples at 300 K. The maximum value has been observed for the Co<sub>21</sub>
Cu<sub>79</sub>
 granular alloy. Above this Co concentration the MR decreases which is attributed to the start of the percolation mechanism. The annealing of Co<sub>21</sub>
Cu<sub>79</sub>
 granular alloy at 450°C leads to a strong increase of the MR to reach 16% after 2 h annealing. The variation of magnetic and transports properties with the Co concentration and annealing time is discussed.</div>
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Magnetic and transport properties of ion beam sputtered CoxCu1-x granular alloys

Magnetic and transport properties of ion beam sputtered CoxCu1-x granular alloys

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri