Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Ferromagnetic resonance and magnetooptic study of submicron epitaxial Fe(001) stripes
Year:2012
Research Areas
  • Physics chemical and mathematical,
  • Engineering
Information
Abstract
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]
International
Si
JCR
Si
Title
Journal of Applied Physics
ISBN
0021-8979
Impact factor JCR
2,168
Impact info
Volume
111
10.1063/1.4730136
Journal number
12
From page
123917
To page
123917
Month
SIN MES
Ranking
Participants
  • 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)
Research Group, Departaments and Institutes related
  • 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
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
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