Crossover Antiferro-Superparamagnetism and Related Kondo-Like Anomalies of Resistivity in Clustered Fe/Cr Multilayers

V.V. Ustinov; L.N. Romashev; M.A. Milyaev; T.P. Krinitsina; A.M. Burkhanov

doi:10.4028/www.scientific.net/AST.52.75

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Crossover Antiferro-Superparamagnetism and Related Kondo-Like Anomalies of Resistivity in Clustered Fe/Cr Multilayers
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HomeAdvances in Science and TechnologyAdvances in Science and Technology Vol. 52Crossover Antiferro-Superparamagnetism and Related...

Crossover Antiferro-Superparamagnetism and Related Kondo-Like Anomalies of Resistivity in Clustered Fe/Cr Multilayers

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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Periodical:

Advances in Science and Technology (Volume 52)

Pages:

75-80

DOI:

https://doi.org/10.4028/www.scientific.net/AST.52.75

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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

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