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Träfflista för sökning "WFRF:(Hjörvarsson Björgvin) ;pers:(Stanciu V)"

Sökning: WFRF:(Hjörvarsson Björgvin) > Stanciu V

  • Resultat 1-7 av 7
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1.
  • Soroka, Inna, et al. (författare)
  • Enhanced magnetic moment at the interfaces in Fe81Ni19/Co superlattices
  • 2004
  • Ingår i: Journal of Magnetism and Magnetic Materials. - : Elsevier BV. - 0304-8853 .- 1873-4766. ; 277:1-2, s. 228-235
  • Tidskriftsartikel (refereegranskat)abstract
    • The structure and magnetic properties of BCC (0 0 1) oriented Fe81Ni19/Co superlattices grown on MgO(0 0 1) substrates by magnetron sputtering are presented. The variation of magnetic moment with the compn. and with the interface d. was studied. A model in which the magnetic moment per atom at the interfaces is different from that in the interior region was used for the anal. The extension of the interface region is ∌3.5 monolayers and the magnetic moment in this region is enhanced by ∌0.3 ÎŒB/atom, compared to the interior regions. The superlattices form a BCC-like structure with a slight orthorhombic distortion, which gives rise to a weak in-plane uniaxial anisotropy. [on SciFinder(R)]
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  • Soroka, Inna, et al. (författare)
  • Structural and magnetic properties of Al2O3/Ni81Fe19 thin films : From superparamagnetic nanoparticles to ferromagnetic multilayers
  • 2005
  • Ingår i: Journal of Physics. - : IOP Publishing. - 0953-8984 .- 1361-648X. ; 17:33, s. 5027-5036
  • Tidskriftsartikel (refereegranskat)abstract
    • Al2O3/Ni81Fe19 multilayer films were produced by sequential magnetron sputter deposition on thermally oxidized Si(001) substrates. By varying the thickness of the Ni81Fe19 layer from 8 to 30 Aa, while keeping the other parameters unchanged, one can control the film structure from nanoclusters to continuous multilayers. The nanoclustered sample is superparamagnetic while the continuous samples show ferromagnetic behavior. The magnetic moments per atom of the Ni81Fe19 layers decrease with decreasing amt. of metallic deposits, indicating the presence of nonmagnetic layers at the interfaces. The thicknesses of these layers are ∌1 Aa for the flat continuous film and 3.8 Aa for the nanoclustered film. The existence of nonmagnetic layers may be interpreted in terms of the formation of antiferromagnetic oxides at the interfaces. [on SciFinder(R)]
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6.
  • Stanciu, V., et al. (författare)
  • Dynamic magnetic properties of Ni81Fe19/Al2O3 multilayers
  • 2005
  • Ingår i: Journal of Magnetism and Magnetic Materials. - : Elsevier BV. - 0304-8853 .- 1873-4766. ; 286:SI, s. 446-449
  • Tidskriftsartikel (refereegranskat)abstract
    • Discontinuous magnetic metal-insulator multilayers of Ni81Fe19 and Al2O3 were prepd. by sequential magnetron sputtering in an UHV chamber. Ni81Fe19 layers of nominal thickness 8 Ã… form clusters of quite uniform size having an av. diam. of ∌24 Ã…. A layered structure is maintained in the out-of-plane direction, but a random distribution of the metal clusters occurs in plane. These films have magnetic properties that vary strongly with the Al2O3 layer thickness-exhibiting ferromagnetic, spin glass like and superparamagnetic behavior as this layer thickness is increased from 10 via 19 to 31
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  • Resultat 1-7 av 7

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