The strain-induced magnetic anisotropy

of Ni/(Au, Ag, Cu)) multilayers

 

H. Salhi1,2*, K. Chafai1, H. Lassri1, R. Krishnan3

1 Laboratoire de Physique des Matériaux, Micro-électronique, Automatique et Thermique (LPMMAT). Faculté des Sciences Ain Chock, Université Hassan II, B.P. 5366 Mâarif, Route d’El Jadida, km-8, Casablanca, Morocco.

2 Laboratoire de Mécanique, Productique et Génie industriel (LMPG). Ecole supérieure de technologie, Université Hassan II, B.P. 5366 Mâarif, Route d’El Jadida, km-8, Casablanca, Morocco.

3Laboratoire de Magnétisme et d’Optique, URA 1531, 45 Avenue des Etats Unis, 78035 Versailles Cedex, France.

* Corresponding author. E-mail: ha.salhi@gmail.com

Received: 19 February 2010; revised version accepted: 21 June 2010

 

Abstract

     The magnetic anisotropy results of Ni/(Au, Ag and Cu) multilayers, prepared by sequential evaporation in ultra high vacuum, were described on the basis of existing models. It is shown that magnetoelastic anisotropy energies Kme of the Ni/(Au, Ag and Cu) multilayers which have fcc (111) perfectly flat interfaces can be expressed with biaxial modulus, magnétostriction and lattice mismatch. In the incoherent state, the residual strain gives rise to a magnetic anisotropy which is proportional to the reciprocal of the magnetic layer thickness. The influence of roughness would decrease the anisotropy contribution.

 

Keywords:  Multilayers; Magnetoelastic anisotropy; Roughness.

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