Unified interfacial inverse magnetoresistance in UHV evaporated sandwiches
Identifieur interne : 000150 ( Maroc/Analysis ); précédent : 000149; suivant : 000151Unified interfacial inverse magnetoresistance in UHV evaporated sandwiches
Auteurs : A. Dinia [France] ; K. Rahmouni [France, Maroc]Source :
- Physics Letters A [ 0375-9601 ] ; 2000.
Abstract
Several series of Co(3 nm)/Ru(x nm)/Co1−xXx(3 nm) sandwiches (with x=0 and 0.08, and X= Au, Cu and Ru) have been prepared by ultra-high vacuum (UHV) evaporation onto mica substrate in order to study the effect of non-magnetic dopants, in the second magnetic layers, on the magnetoresistance (MR). MR measurements performed at room temperature on these series have clearly evidenced the presence of inverse giant magnetoresistance (GMR) for non-doped and doped (Cu, Au) series in a thickness range corresponding to the ferromagnetic region. Moreover, for the series with Ru as dopant, the inverse GMR has been observed for all Ru spacer thicknesses. This inverse GMR is mainly due to the interface spin-dependent scattering which results from the chemical asymmetry between the Co/Ru interfaces. The analysis shows that the doping of the Co with non-miscible metals (Cu and Au) has a small effect on the bulk and interface spin-dependent scattering contributions to the GMR, while the doping with miscible metal (Ru) induces a strong reduction of the bulk spin-dependent scattering contribution to the GMR.
Url:
DOI: 10.1016/S0375-9601(99)00823-3
Affiliations:
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Dinia</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>IPCMS-GEMM, ULP-CNRS, UMR 046-23 rue du Loess, 67037 Strasbourg</wicri:regionArea><placeName><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Alsace (région administrative)</region><settlement type="city">Strasbourg</settlement></placeName></affiliation><affiliation wicri:level="1"><country wicri:rule="url">France</country></affiliation></author><author><name sortKey="Rahmouni, K" sort="Rahmouni, K" uniqKey="Rahmouni K" first="K" last="Rahmouni">K. 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MR measurements performed at room temperature on these series have clearly evidenced the presence of inverse giant magnetoresistance (GMR) for non-doped and doped (Cu, Au) series in a thickness range corresponding to the ferromagnetic region. Moreover, for the series with Ru as dopant, the inverse GMR has been observed for all Ru spacer thicknesses. This inverse GMR is mainly due to the interface spin-dependent scattering which results from the chemical asymmetry between the Co/Ru interfaces. The analysis shows that the doping of the Co with non-miscible metals (Cu and Au) has a small effect on the bulk and interface spin-dependent scattering contributions to the GMR, while the doping with miscible metal (Ru) induces a strong reduction of the bulk spin-dependent scattering contribution to the GMR.</div></front></TEI><affiliations><list><country><li>France</li><li>Maroc</li></country><region><li>Alsace (région administrative)</li><li>Grand Est</li><li>Rabat-Salé-Kénitra</li></region><settlement><li>Rabat</li><li>Strasbourg</li></settlement></list><tree><country name="France"><region name="Grand Est"><name sortKey="Dinia, A" sort="Dinia, A" uniqKey="Dinia A" first="A" last="Dinia">A. Dinia</name></region><name sortKey="Dinia, A" sort="Dinia, A" uniqKey="Dinia A" first="A" last="Dinia">A. Dinia</name><name sortKey="Rahmouni, K" sort="Rahmouni, K" uniqKey="Rahmouni K" first="K" last="Rahmouni">K. Rahmouni</name></country><country name="Maroc"><region name="Rabat-Salé-Kénitra"><name sortKey="Rahmouni, K" sort="Rahmouni, K" uniqKey="Rahmouni K" first="K" last="Rahmouni">K. Rahmouni</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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