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Controlling Exchange Coupling Strength in Ni x Cu1?x Thin Films |
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| Authors: | B Nagy Y N Khaydukov L F Kiss S Sajti D G Merkel F Tanczikó A S Vasenko R O Tsaregorodsev A Rühm T Keller L Bottyán |
| Affiliation: | 1. Wigner Research Centre for Physics, Hungarian Academy of Sciences, Budapest, Hungary 2. Max-Planck Institute for Solid State Research, Stuttgart, Germany 3. Forschungs-Neutronenquelle Heinz Maier-Leibnitz, Technische Universit?t München, Munich, Germany 4. Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, Russia 5. Institut Laue-Langevin, 6 rue Jules Horowitz, BP 156, 38042, Grenoble, France 6. Faculty of Physics, Moscow State University, Moscow, Russia 7. Max-Planck Institute for Intelligent Systems, Stuttgart, Germany |
| Abstract: | The thickness (d F) and concentration (x) dependence of the Curie temperature of Ni x Cu1?x (d F) ferromagnetic alloy layers (x=0.55, 0.65, d F=4.5 nm÷12 nm]) in contact with a vanadium layer was studied. The Curie temperature of the ferromagnetic layers depends on the thickness when it is comparable with the transition layer between the F and the vanadium layers, which is attributed to the proximity coupling of the interface region with the rest of the F layer. The present study provides valuable information for fabrication of samples with controlled exchange coupling strength for studies of superconductor/ferromagnet proximity effects. |
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