Magnetic Fe stripes created by self-organized MnAs template: Stripe edge pinning and high-frequency properties (Articolo in rivista)

Type
Label
  • Magnetic Fe stripes created by self-organized MnAs template: Stripe edge pinning and high-frequency properties (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.80.155427 (literal)
Alternative label
  • S. Tacchi(1) M. Madami(1), G. Carlotti (1), G. Gubbiotti(1), M. Marangolo(2), J. Milano(3), R. Breitwieser(2), V. H. Etgens(2), R. L. Stamps(4), and M. G. Pini(5) (2009)
    Magnetic Fe stripes created by self-organized MnAs template: Stripe edge pinning and high-frequency properties
    in Physical review. B, Condensed matter and materials physics (Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • S. Tacchi(1) M. Madami(1), G. Carlotti (1), G. Gubbiotti(1), M. Marangolo(2), J. Milano(3), R. Breitwieser(2), V. H. Etgens(2), R. L. Stamps(4), and M. G. Pini(5) (literal)
Pagina inizio
  • 155427 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 80 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 7 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) CNISM, Dipartimento di Fisica, Università di Perugia, Via A. Pascoli, I-06123 Perugia, Italy (2) INSP, UPMC Paris 06, CNRS UMR 7588, 140 Rue de Lourmel, 75015 Paris, France (3)CNEA-CONICET and Instituto Balseiro, UNCuyo Centro Atómico Bariloche, R8402AGP San Carlos de Bariloche, Argentina (4) School of Physics, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia (5) Istituto dei Sistemi Complessi, CNR, Via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy (literal)
Titolo
  • Magnetic Fe stripes created by self-organized MnAs template: Stripe edge pinning and high-frequency properties (literal)
Abstract
  • Self-organization is an interesting route to the fabrication of nanostructured magnetic materials. Here we show that, near room temperature, an ultrathin Fe film deposited on a suitable MnAs template spontaneously breaks into a \"lateral\" superlattice of magnetic stripes. The magnetic superstructure originates from the temperature-dependent morphological change in the substrate: an epitaxially grown MnAs/GaAs?001? film, whose groove-ridge structure was investigated by scanning tunneling microscopy. Owing to the stray magnetic fields produced by the underlying MnAs template, the Fe stripe domains have opposite magnetizations, and behave essentially as independent magnetic entities because of strong stripe edge pinning. This is shown dramatically in terms of a split microwave resonance that can be controlled with an external magnetic field, as proved by Brillouin light-scattering data and analysis of the Fe spin-wave frequencies. Additionally, the potential for device applications of such lateral magnetic superlattices, displaying an \"inverse\" exchange-spring behavior, is discussed. (literal)
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