Articles dans des revues à comité de lecture
|AF coupling of copper-cobalt multilayers with small grain size|
|Bobo J.-F., Baylac B., Hennet L., Lenoble O., Piecuch M., Raquet B., Ousset J.-C.|
|Journal of Magnetism and Magnetic Materials 121 (1993) 286|
We report the observation of oscillatory interlayer coupling for a series of Fe50AÌ[Co12AÌ-CutAÌ]15Cu50AÌ samples sputtered on glass substrates. The antiferromagnetic (AF) maxima are observed for t = 9 and 20 AÌ. The particularities of our samples are their very small grain size ( ~ 20 AÌ) without any preferential orientation and the sharpness of their interfaces ( ~ 1 AÌ). These characteristics are favorable to strong magnetoresistive effects which exceed 40% at 300 K and 90% at 4.2 K for our best samples. Our results must be confronted by theoretical models that are only valid in the case of ideal single-crystals.