Crossover Antiferro-Superparamagnetism and Related Kondo-Like Anomalies of Resistivity in Clustered Fe/Cr Multilayers |
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| Journal | Advances in Science and Technology (Volume 52) |
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| Volume | Spin Injection and Transport in Magnetoelectronics |
| Edited by | P. VINCENZINI and D. FIORANI |
| Pages | 75-80 |
| DOI | 10.4028/www.scientific.net/AST.52.75 |
| Citation | V.V. Ustinov et al., 2006, Advances in Science and Technology, 52, 75 |
| Online since | October, 2006 |
| Authors | V.V. Ustinov, L.N. Romashev, M.A. Milyaev, T.P. Krinitsina, A.M. Burkhanov |
| Keywords | Antiferromagnetism, Electrical Resistance, Kondo-Effect, Multilayer, Superparamagnetism |
| Abstract | The magnetic and magnetoresistive properties of nanostructured Fe/Cr multilayers with ultra-thin Fe layers (the nominal Fe thickness tFe is down to 0.3 Å) have been investigated at low temperatures (down to 2 K) in magnetic fields up to 90 kOe. Nanostructures were MBE grown in ultrahigh vacuum on single crystal MgO substrates. It is shown that Fe layers in nanostructures with tFe < 2 Å are not continuous but consist of separate ferromagnetic clusters. Such cluster-layered nanostructures exhibit superparamagnetic properties and the Kondo-like behavior of resistivity. |
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