Journal of Superconductivity and Novel Magnetism

, Volume 25, Issue 1, pp 117–123 | Cite as

Magnetic Studies of Spin Wave in Fe/Ag Multilayer Films

Original Paper


Magnetic properties of Fe/Ag multilayer films are investigated and examined versus Fe layer thickness t Fe. As a result, spontaneous magnetization M(T) temperature dependence has been revealed to be well described by a T 3/2 law in all multilayer films (7 Å≤t Fe≤60 Å). Spin-wave theory based on anisotropic ferromagnetic system has been also used to explain magnetization temperature dependence. For Fe layer thickness, approximate values for J 0 bulk exchange interaction and J s surface exchange interaction have been estimated. First principle calculations based on density functional theory (DFT) and Korringa–Kohn–Rostoker (KKR)—coherent potential approximation (CPA) method—combined with Local Spin Density Approximation (LSDA), are performed as well. Magnetic moment, in fcc Ag1−x Fe x and bcc Fe1−x Ag x systems, versus x is presented and discussed in terms of Fe content on magnetic coupling. Reasonable agreement between experimental data and theoretical calculations is highlighted.


Fe/Ag multilayers Spin wave excitations Exchange interaction Magnetic moment DFT KKR–CPA method 


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© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.Université Hassan IILaboratoire de Physique des Matériaux, de Micro-électronique, Automatique et Thermique, Faculté des Sciences Ain ChockCasablancaMorocco
  2. 2.Université Hassan IILaboratoire de Physique Théorique et Appliquée (LPFA), Faculté des Sciences Ain ChockCasablancaMaroc
  3. 3.Institut NéelCNRS, Université J. FourierGrenobleFrance

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