Magnetic Properties and Electronic Structure of Ni81Fe19/Zr Multilayer Films
Identifieur interne : 000079 ( France/Analysis ); précédent : 000078; suivant : 000080Magnetic Properties and Electronic Structure of Ni81Fe19/Zr Multilayer Films
Auteurs : Z. Yamkane [Maroc] ; H. Lassri [Maroc] ; N. Omari [Maroc, France] ; E. K. Hlil [France]Source :
- Journal of superconductivity and novel magnetism [ 1557-1939 ] ; 2012.
Descripteurs français
- Pascal (Inist)
- Résonance ferromagnétique, Résonance onde spin, Pulvérisation cathodique, Densité état électron, Transformation phase, Onde spin, Interaction échange, Largeur raie, Autocohérence, Calcul ab initio, Calcul KKR, Nickel alliage, Fer alliage, Zirconium, Multicouche, Alliage amorphe, Nanocristal, Métal transition, Ni81Fe19.
English descriptors
- KwdEn :
- Ab initio calculations, Amorphous alloy, Cathode sputtering, Electronic density of states, Exchange interactions, Ferromagnetic resonance, Iron alloys, KKR calculations, Line widths, Multilayers, Nanocrystal, Nickel alloys, Phase transformations, Self consistency, Spin wave resonance, Spin waves, Transition elements, Zirconium.
Abstract
Magnetic properties of NiFe/Zr multilayer films, prepared by DC magnetron sputtering, have been studied by vibrating sample magnetometer and ferromagnetic resonance (FMR). Spin-wave resonances were observed in Ni81Fe19/Zr multilayer films in FMR experiments, and the spin wave was found to be sustained by both the whole films. Estimated small interlayer coupling constant shows weak exchange coupling effect between NiFe layers across Zr spacers. The FMR linewidth, in parallel geometry, of the uniform mode was found to increase with decreasing NiFe thickness (20 Å ≤ tNiFe ≤ 120 Å) indicating that it corresponds to an interfacial effect. In addition, electronic and magnetic properties of multilayers are investigated by self-consistent ab initio calculations based on Korringa-Kohn- Rostocker (KKR). Spin polarized within the framework of the Coherent Potential Approximation (CPA) is considered for calculations.
Affiliations:
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Pascal:12-0316265Le document en format XML
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Yamkane</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Physique des Materiaux, Micro-électronique, Automatique et thermique, Faculté des Sciences Ain Chock, Universite Hassan II, B.P. 5366 Maarif, Route d'El Jadida, km-8</s1><s2>Casablanca</s2><s3>MAR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Maroc</country><wicri:noRegion>Casablanca</wicri:noRegion></affiliation></author><author><name sortKey="Lassri, H" sort="Lassri, H" uniqKey="Lassri H" first="H." last="Lassri">H. Lassri</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Physique des Materiaux, Micro-électronique, Automatique et thermique, Faculté des Sciences Ain Chock, Universite Hassan II, B.P. 5366 Maarif, Route d'El Jadida, km-8</s1><s2>Casablanca</s2><s3>MAR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Maroc</country><wicri:noRegion>Casablanca</wicri:noRegion></affiliation></author><author><name sortKey="Omari, N" sort="Omari, N" uniqKey="Omari N" first="N." last="Omari">N. Omari</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Physique des Materiaux, Micro-électronique, Automatique et thermique, Faculté des Sciences Ain Chock, Universite Hassan II, B.P. 5366 Maarif, Route d'El Jadida, km-8</s1><s2>Casablanca</s2><s3>MAR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Maroc</country><wicri:noRegion>Casablanca</wicri:noRegion></affiliation><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Institut Néel, CNRS-Université Joseph Fourier, BP 166</s1><s2>38042 Grenoble</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region><settlement type="city">Grenoble</settlement></placeName><orgName type="university">Université Joseph Fourier</orgName></affiliation></author><author><name sortKey="Hlil, E K" sort="Hlil, E K" uniqKey="Hlil E" first="E. K." last="Hlil">E. K. Hlil</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Institut Néel, CNRS-Université Joseph Fourier, BP 166</s1><s2>38042 Grenoble</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region><settlement type="city">Grenoble</settlement></placeName><orgName type="university">Université Joseph Fourier</orgName></affiliation></author></analytic><series><title level="j" type="main">Journal of superconductivity and novel magnetism</title><title level="j" type="abbreviated">J. supercond. nov. magn.</title><idno type="ISSN">1557-1939</idno><imprint><date when="2012">2012</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of superconductivity and novel magnetism</title><title level="j" type="abbreviated">J. supercond. nov. magn.</title><idno type="ISSN">1557-1939</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Ab initio calculations</term><term>Amorphous alloy</term><term>Cathode sputtering</term><term>Electronic density of states</term><term>Exchange interactions</term><term>Ferromagnetic resonance</term><term>Iron alloys</term><term>KKR calculations</term><term>Line widths</term><term>Multilayers</term><term>Nanocrystal</term><term>Nickel alloys</term><term>Phase transformations</term><term>Self consistency</term><term>Spin wave resonance</term><term>Spin waves</term><term>Transition elements</term><term>Zirconium</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Résonance ferromagnétique</term><term>Résonance onde spin</term><term>Pulvérisation cathodique</term><term>Densité état électron</term><term>Transformation phase</term><term>Onde spin</term><term>Interaction échange</term><term>Largeur raie</term><term>Autocohérence</term><term>Calcul ab initio</term><term>Calcul KKR</term><term>Nickel alliage</term><term>Fer alliage</term><term>Zirconium</term><term>Multicouche</term><term>Alliage amorphe</term><term>Nanocristal</term><term>Métal transition</term><term>Ni81Fe19</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Magnetic properties of NiFe/Zr multilayer films, prepared by DC magnetron sputtering, have been studied by vibrating sample magnetometer and ferromagnetic resonance (FMR). Spin-wave resonances were observed in Ni<sub>81</sub>Fe<sub>19</sub>/Zr multilayer films in FMR experiments, and the spin wave was found to be sustained by both the whole films. Estimated small interlayer coupling constant shows weak exchange coupling effect between NiFe layers across Zr spacers. The FMR linewidth, in parallel geometry, of the uniform mode was found to increase with decreasing NiFe thickness (20 Å ≤ t<sub>NiFe</sub> ≤ 120 Å) indicating that it corresponds to an interfacial effect. In addition, electronic and magnetic properties of multilayers are investigated by self-consistent ab initio calculations based on Korringa-Kohn- Rostocker (KKR). Spin polarized within the framework of the Coherent Potential Approximation (CPA) is considered for calculations.</div></front></TEI><affiliations><list><country><li>France</li><li>Maroc</li></country><region><li>Auvergne-Rhône-Alpes</li><li>Rhône-Alpes</li></region><settlement><li>Grenoble</li></settlement><orgName><li>Université Joseph Fourier</li></orgName></list><tree><country name="Maroc"><noRegion><name sortKey="Yamkane, Z" sort="Yamkane, Z" uniqKey="Yamkane Z" first="Z." last="Yamkane">Z. Yamkane</name></noRegion><name sortKey="Lassri, H" sort="Lassri, H" uniqKey="Lassri H" first="H." last="Lassri">H. Lassri</name><name sortKey="Omari, N" sort="Omari, N" uniqKey="Omari N" first="N." last="Omari">N. Omari</name></country><country name="France"><region name="Auvergne-Rhône-Alpes"><name sortKey="Omari, N" sort="Omari, N" uniqKey="Omari N" first="N." last="Omari">N. Omari</name></region><name sortKey="Hlil, E K" sort="Hlil, E K" uniqKey="Hlil E" first="E. K." last="Hlil">E. K. 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