Effects of interfacial roughness on the magnetoresistance of Co/Cu multilayers
Identifieur interne : 000640 ( Main/Exploration ); précédent : 000639; suivant : 000641Effects of interfacial roughness on the magnetoresistance of Co/Cu multilayers
Auteurs : F. Trigui [Tunisie] ; B. Elsafi [Tunisie] ; Z. Fakhfakh [Tunisie] ; P. Beauvillain [France]Source :
- Journal of magnetism and magnetic materials [ 0304-8853 ] ; 2010.
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Abstract
Using a semi-classical approach, Hood, Falicov and Penn have studied the effects of interfacial roughness on the magnetoresistance (MR) of iron based trilayers (Fe/Cr/Fe and Fe/Cu/Fe). We extend their theory to magnetic metallic multilayers composed of N bilayers ferromagnetic-normal metal. The in plane MR of Co/Cu multilayers is calculated for correlated quasiperiodic interfaces. The averaged effects due to impurities, interdiffusion, band structure, etc. are included in a simple way using two phenomenological parameters S↑ and S↓ for two directions of spin. MR variation with S↑, S↓ and relaxation time is reported. We analyse also recent experimental data giving the influence of number of bilayers on the MR of Co/Cu multilayers for different temperatures.
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Fakhfakh</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Lamacop, Department of physics, Faculté des Sciences de Sfax, University of sfax, route Soukra km3.5, B.P 1071</s1><s2>3000 Sfax</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>3000 Sfax</wicri:noRegion></affiliation></author><author><name sortKey="Beauvillain, P" sort="Beauvillain, P" uniqKey="Beauvillain P" first="P." last="Beauvillain">P. Beauvillain</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Institut d'Electronique Fondamentale, Bât 220 Université Paris sud</s1><s2>91405 Orsay</s2><s3>FRA</s3><sZ>4 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Orsay</settlement></placeName></affiliation></author></analytic><series><title level="j" type="main">Journal of magnetism and magnetic materials</title><title level="j" type="abbreviated">J. magn. magn. mater.</title><idno type="ISSN">0304-8853</idno><imprint><date when="2010">2010</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of magnetism and magnetic materials</title><title level="j" type="abbreviated">J. magn. magn. mater.</title><idno type="ISSN">0304-8853</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Bilayers</term><term>Cobalt</term><term>Copper</term><term>Ferromagnetic materials</term><term>Interface structure</term><term>Magnetoresistance</term><term>Multilayers</term><term>Phenomenological model</term><term>Roughness</term><term>Semiclassical theory</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Rugosité</term><term>Magnétorésistance</term><term>Théorie semiclassique</term><term>Structure interface</term><term>Modèle phénoménologique</term><term>Cuivre</term><term>Multicouche</term><term>Cobalt</term><term>Bicouche</term><term>Matériau ferromagnétique</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Cuivre</term><term>Cobalt</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Using a semi-classical approach, Hood, Falicov and Penn have studied the effects of interfacial roughness on the magnetoresistance (MR) of iron based trilayers (Fe/Cr/Fe and Fe/Cu/Fe). We extend their theory to magnetic metallic multilayers composed of N bilayers ferromagnetic-normal metal. The in plane MR of Co/Cu multilayers is calculated for correlated quasiperiodic interfaces. The averaged effects due to impurities, interdiffusion, band structure, etc. are included in a simple way using two phenomenological parameters S↑ and S↓ for two directions of spin. MR variation with S↑, S↓ and relaxation time is reported. We analyse also recent experimental data giving the influence of number of bilayers on the MR of Co/Cu multilayers for different temperatures.</div></front></TEI><affiliations><list><country><li>France</li><li>Tunisie</li></country><region><li>Île-de-France</li></region><settlement><li>Orsay</li></settlement></list><tree><country name="Tunisie"><noRegion><name sortKey="Trigui, F" sort="Trigui, F" uniqKey="Trigui F" first="F." last="Trigui">F. Trigui</name></noRegion><name sortKey="Elsafi, B" sort="Elsafi, B" uniqKey="Elsafi B" first="B." last="Elsafi">B. Elsafi</name><name sortKey="Fakhfakh, Z" sort="Fakhfakh, Z" uniqKey="Fakhfakh Z" first="Z." last="Fakhfakh">Z. Fakhfakh</name></country><country name="France"><region name="Île-de-France"><name sortKey="Beauvillain, P" sort="Beauvillain, P" uniqKey="Beauvillain P" first="P." last="Beauvillain">P. Beauvillain</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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