NickelMaghrebV1, Main, Exploration, bibRecord, 000409

Study of the Magnetic Properties of Ni/Ag Superlattice

Identifieur interne : 000409 ( Main/Exploration ); précédent : 000408; suivant : 000410

Study of the Magnetic Properties of Ni/Ag Superlattice

Auteurs : R. Masrour [Maroc] ; M. Hamedoun [Maroc] ; A. Benyoussef [Maroc] ; H. Lassri [Maroc]

Source :

Journal of superconductivity and novel magnetism [ 1557-1939 ] ; 2010.

RBID : Pascal:10-0226097

Descripteurs français

Pascal (Inist)
- Dépôt phase vapeur, Dépôt sous vide, Ultravide, Point critique, Interaction échange, Epaisseur, Magnétisme surface, Loi puissance, Longueur corrélation, Exposant critique, Aimantation, Nickel, Argent, Superréseau, Couche mince, Multicouche.
Wicri :
- topic : Nickel, Argent.

English descriptors

KwdEn :
- Correlation length, Critical exponents, Critical points, Exchange interactions, Magnetization, Multilayers, Nickel, Power law, Silver, Superlattices, Surface magnetism, Thickness, Thin films, Ultrahigh vacuum, Vacuum deposition, Vapor deposition.

Abstract

Thin multilayer films of alternating ultrathin Ni and Ag layers (L(Ni) = 11, 15, 30 Å, bulk and L(Ag) = 50 Å) have been prepared by evaporation in ultrahigh vacuum under controlled conditions and have been studied by the magnetic measurements. The critical temperature T_C is studied as a function of the surface exchange interaction (J_S). The dependence of T_C on the thickness L of the film has been investigated. A critical value of the surface exchange interaction in the film, above which the surface magnetism appears, is obtained. The shift of the critical temperature T_C(L) from the bulk value [T_C(∞)/T_C(∞) - 1] can be described by a power law L^-λ, where λ = 1/v_b is the inverse of the correlation length's exponent. The effective critical exponent associated with the magnetization M(β) is deduced for different thicknesses of Ni layers, and the thickness L (Ag) was being kept constant at 50 Å.

Affiliations:

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Le document en format XML

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<series><title level="j" type="main">Journal of superconductivity and novel magnetism</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Correlation length</term>
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<term>Exchange interactions</term>
<term>Magnetization</term>
<term>Multilayers</term>
<term>Nickel</term>
<term>Power law</term>
<term>Silver</term>
<term>Superlattices</term>
<term>Surface magnetism</term>
<term>Thickness</term>
<term>Thin films</term>
<term>Ultrahigh vacuum</term>
<term>Vacuum deposition</term>
<term>Vapor deposition</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Dépôt phase vapeur</term>
<term>Dépôt sous vide</term>
<term>Ultravide</term>
<term>Point critique</term>
<term>Interaction échange</term>
<term>Epaisseur</term>
<term>Magnétisme surface</term>
<term>Loi puissance</term>
<term>Longueur corrélation</term>
<term>Exposant critique</term>
<term>Aimantation</term>
<term>Nickel</term>
<term>Argent</term>
<term>Superréseau</term>
<term>Couche mince</term>
<term>Multicouche</term>
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<term>Argent</term>
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<front><div type="abstract" xml:lang="en">Thin multilayer films of alternating ultrathin Ni and Ag layers (L(Ni) = 11, 15, 30 Å, bulk and L(Ag) = 50 Å) have been prepared by evaporation in ultrahigh vacuum under controlled conditions and have been studied by the magnetic measurements. The critical temperature T<sub>C</sub>
 is studied as a function of the surface exchange interaction (J<sub>S</sub>
). The dependence of T<sub>C</sub>
 on the thickness L of the film has been investigated. A critical value of the surface exchange interaction in the film, above which the surface magnetism appears, is obtained. The shift of the critical temperature T<sub>C</sub>
(L) from the bulk value [T<sub>C</sub>
(∞)/T<sub>C</sub>
(∞) - 1] can be described by a power law L<sup>-λ</sup>
, where λ = 1/v<sub>b</sub>
 is the inverse of the correlation length's exponent. The effective critical exponent associated with the magnetization M(β) is deduced for different thicknesses of Ni layers, and the thickness L (Ag) was being kept constant at 50 Å.</div>
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Study of the Magnetic Properties of Ni/Ag Superlattice

Study of the Magnetic Properties of Ni/Ag Superlattice

Source :

Descripteurs français

English descriptors

Abstract

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

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