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A model for structural defects in nanomagnets

J. Appl. Phys. 106, 084320 (2009); doi:10.1063/1.3247542

Published 27 October 2009

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F. A. Apolonio, W. A. Moura-Melo, F. P. Crisafuli, A. R. Pereira, and R. L. Silva
Departamento de Física, Universidade Federal de Viçosa, Viçosa 36570-000, Minas Gerais, Brazil
A model for describing structural pointlike defects in nanoscaled ferromagnetic materials is presented. Its details are explicitly developed whenever it interacts with a vortexlike state comprised in a thin nanodisk. Among others, our model yields results for the vortex equilibrium position under the influence of several defects along with an external magnetic field that is shown to be in good qualitative agreement with experiments. We also discuss how such defects may affect the vortex motion, such as its gyrotropic oscillation and dynamical polarization reversal. ©2009 American Institute of Physics
History: Received 20 August 2009; accepted 15 September 2009; published 27 October 2009
Permalink: http://link.aip.org/link/?JAPIAU/106/084320/1
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KEYWORDS and PACS

Keywords
PACS
  • 75.75.+a
    Magnetic properties of nanostructures
  • 75.60.Ej
    Magnetization curves, hysteresis, Barkhausen and related effects
  • 75.40.Mg
    Numerical simulation studies of magnetic materials
  • 75.40.Gb
    Dynamic properties of magnetic materials
  • 61.46.-w
    Structure of nanoscale materials
  • YEAR: 2009

RELATED DATABASES

Web of Science

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PUBLICATION DATA

ISSN:
0021-8979 (print)   1089-7550 (online)
Publisher:
AIP is a member of CrossRef AIP

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