Surface spin-flop in a uniaxial antiferromagnetic Fe/Cr superlattice induced by a magnetic field of arbitrary direction (Articolo in rivista)

Type
Label
  • Surface spin-flop in a uniaxial antiferromagnetic Fe/Cr superlattice induced by a magnetic field of arbitrary direction (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0953-8984/19/13/136001 (literal)
Alternative label
  • M. G. Pini; A. Rettori; P. Betti; J. S. Jiang; Y. Ji; S. G. E. te Velthuis; G. P. Felcher; S. D. Bader (2007)
    Surface spin-flop in a uniaxial antiferromagnetic Fe/Cr superlattice induced by a magnetic field of arbitrary direction
    in Journal of physics. Condensed matter (Print); IOP Publishing Ltd. (Institute of Physics Publishing Ltd), "Bristol ; London" (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • M. G. Pini; A. Rettori; P. Betti; J. S. Jiang; Y. Ji; S. G. E. te Velthuis; G. P. Felcher; S. D. Bader (literal)
Pagina inizio
  • 136001 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/0953-8984/19/13/136001/pdf/0953-8984_19_13_136001.pdf (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 19 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 15 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 13 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1) Istituto dei Sistemi Complessi, CNR, Sezione di Firenze, Via Madonna del Piano, I-50019 Sesto Fiorentino (FI), Italy 2) Dipartimento di Fisica, Università di Firenze, Via G Sansone 1, I-50019 Sesto Fiorentino (FI), Italy 3) INFM-CNR National Research Center S3, Via Campi 213/A, I-41100 Modena, Italy 4) Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA (literal)
Titolo
  • Surface spin-flop in a uniaxial antiferromagnetic Fe/Cr superlattice induced by a magnetic field of arbitrary direction (literal)
Abstract
  • We studied the transition between the antiferromagnetic and the surface spin - flop phases of a uniaxial antiferromagnetic [ Fe( 14 angstrom)/Cr( 11 angstrom)](x20) superlattice. For external fields applied parallel to the in-plane easy axis, the layer-by-layer configuration, calculated in the framework of a mean-field one-dimensional model, was benchmarked against published polarized neutron reflectivity data. For an in-plane field H applied at an angle psi = 0 degrees to the easy axis, magnetometry shows that the magnetization M vanishes at H = 0, then increases slowly with increasing H. At a critical value of H, a finite jump in M( H) is observed for psi < 5 degrees, while a smooth increase of M versus H is found for psi > 5 degrees. A dramatic increase in the full width at half maximum of the magnetic susceptibility is observed for psi >= 5 degrees. The phase diagram obtained from micromagnetic calculations displays a first-order transition to a surface spin-flop phase for low psi values, while the transition becomes continuous for psi greater than a critical angle, psi(max) approximate to 4.75 degrees. This is in fair agreement with the experimentally observed results. (literal)
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