Ferromagnetic resonance and magnetooptic study of submicron epitaxial Fe(001) stripes

Paz, Elvira; Cebollada Baratas, Federico Alberto; Palomares Simón, Francisco Javier; González Fernández, Jesús María; Martins, J.S.; Santos, N. M. y Sobolev, Nikolai Andreevitch (2012). Ferromagnetic resonance and magnetooptic study of submicron epitaxial Fe(001) stripes. "Journal of Applied Physics", v. 111 (n. 12); p. 123917. ISSN 0021-8979. https://doi.org/10.1063/1.4730136.

Descripción

Título: Ferromagnetic resonance and magnetooptic study of submicron epitaxial Fe(001) stripes
Autor/es:
  • Paz, Elvira
  • Cebollada Baratas, Federico Alberto
  • Palomares Simón, Francisco Javier
  • González Fernández, Jesús María
  • Martins, J.S.
  • Santos, N. M.
  • Sobolev, Nikolai Andreevitch
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Applied Physics
Fecha: 27 Junio 2012
Volumen: 111
Materias:
Palabras Clave Informales: electron beam lithography, ferromagnetic resonance, gold, iron, magnesium compounds, magnetic anisotropy, magnetic epitaxial layers, magneto-optical effects, metallic epitaxial layers, nanofabrication, nanolithography, nanomagnetics, nanostructured materials, pulsed laser deposition, vapour phase epitaxial growth
Escuela: E.T.S.I. Telecomunicación (UPM)
Departamento: Física Aplicada a las Tecnologías de la Información [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 19069
Identificador DC: http://oa.upm.es/19069/
Identificador OAI: oai:oa.upm.es:19069
Identificador DOI: 10.1063/1.4730136
URL Oficial: http://jap.aip.org/resource/1/japiau/v111/i12/p123917_s1?isAuthorized=no
Depositado por: Memoria Investigacion
Depositado el: 08 Sep 2013 09:16
Ultima Modificación: 21 Abr 2016 17:19
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