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Journal of the Korean Physical Society

, Volume 62, Issue 10, pp 1521–1524 | Cite as

Coercivity dependence on periodicity of Co and Py antidot arrays

  • Celia Castán-GuerreroEmail author
  • Juan Bartolomé
  • Fernando Bartolomé
  • Luis Miguel García
  • Javier Sesé
  • Pavel Strichovanec
  • Julia Herrero-Albillos
  • Karla J. Merazzo
  • Manuel Vázquez
  • Paolo Vavassori
Article

Abstract

An experimental study on the control of thin films magnetic coercivity through the change in geometry of antidot arrays has been performed on two different materials: cobalt and permalloy. Antidot arrays have been fabricated using a Focused Ion Beam, and magnetic hysteresis loops have been measured using Kerr effect microscopy. The coercivity dependence on the material and the array periodicity have been studied. A novel method to estimate the antidot diameter from MOKE data is presented. Results suggest a widening of the antidot effective diameter compared to the one measured from SEM images. This could be attributed to a damage of the magnetic material around the holes during the fabrication process, which leads to amorphization and concomitant reduction of the surrounding film magnetization.

Keywords

Antidot Coercivity Magnetic Cobalt Permalloy 

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Copyright information

© The Korean Physical Society 2013

Authors and Affiliations

  • Celia Castán-Guerrero
    • 1
    Email author
  • Juan Bartolomé
    • 1
  • Fernando Bartolomé
    • 1
  • Luis Miguel García
    • 1
  • Javier Sesé
    • 2
  • Pavel Strichovanec
    • 2
  • Julia Herrero-Albillos
    • 3
  • Karla J. Merazzo
    • 4
  • Manuel Vázquez
    • 4
  • Paolo Vavassori
    • 5
  1. 1.Instituto de Ciencia de Materiales de Aragón (ICMA) and Departamento de Física de la Materia CondensadaConsejo Superior de Investigaciones Científicas — Universidad de ZaragozaZaragozaSpain
  2. 2.Instituto de Nanociencia de Aragón and Departamento de Física de la Materia CondensadaUniversidad de ZaragozaZaragozaSpain
  3. 3.Centro Universitario de la DefensaZaragozaSpain
  4. 4.Instituto de Ciencia de Materiales de MadridConsejo Superior de Investigaciones CientíficasMadridSpain
  5. 5.CIC nanoGUNE ConsoliderIKERBASKEDonostia — San SebastianSpain

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