Memorias de investigación
Artículos en revistas:
Ferromagnetic resonance and magnetooptic study of submicron epitaxial Fe(001) stripes
Año:2012
Áreas de investigación
  • Física química y matemáticas,
  • Ingenierías
Datos
Descripción
Abstract: We present a combined magnetooptic and ferromagnetic resonance study of a series of arrays of single-crystalline Fe stripes fabricated by electron beam lithography on epitaxial Au(001)/Fe(001)/MgO(001) films grown by pulsed laser deposition. The analysis of the films revealed a clear fourfold magnetocrystalline anisotropy, with no significant presence of other anisotropy sources. The use of a large series of arrays, with stripe widths between 140 and 1000 nm and separation between them of either 200 nm or 500 nm, allowed studying their magnetization processes and resonance modes as well as the effects of the dipolar interactions on both. The magnetization processes of the stripes were interpreted in terms of a macrospin approximation, with a good agreement between experiments and calculations and negligible influence of the dipolar interactions. The ferromagnetic resonance spectra evidenced two types of resonances linked to bulk oscillation modes, essentially insensitive to the dipolar interactions, and a third one associated with edge-localized oscillations, whose resonance field is strongly dependent on the dipolar interactions. The ability to produce a high quality, controlled series of stripes provided a good opportunity to achieve an agreement between the experiments and calculations, carried out by taking into account just the Fe intrinsic properties and the morphology of the arrays, thus evidencing the relatively small role of other extrinsic factors. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4730136]
Internacional
Si
JCR del ISI
Si
Título de la revista
Journal of Applied Physics
ISSN
0021-8979
Factor de impacto JCR
2,168
Información de impacto
Volumen
111
DOI
10.1063/1.4730136
Número de revista
12
Desde la página
123917
Hasta la página
123917
Mes
SIN MES
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Participantes
  • Autor: Federico Alberto Cebollada Baratas UPM
  • Autor: E PAZ POEMMA-CEMDATIC
  • Autor: F PALOMARES U AUTONOMA DE MDRID
  • Autor: JESUS MARIA GONZALEZ ICMM-CSIC
  • Autor: N. M. SANTOS UNIV. AVEIRO
  • Autor: N.A. SOBOLEV U. AVEIRO
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Propiedades ópticas, eléctricas y magnéticas de materiales y sus aplicaciones (POEMMA)
  • Centro o Instituto I+D+i: Centro de Materiales y Dispositivos Avanzados para Tecnologías de Información y Comunicaciones
  • Departamento: Física Aplicada a las Tecnologías de la Información