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Anisotropy Coupling in Patterned Thin Films with Mixed Uniaxial Anisotropies

  • Nam, Yoon Jae (Department of Nano Semiconductor Engineering, Korea University) ;
  • Lee, Tae Young (Department of Nano Semiconductor Engineering, Korea University) ;
  • Lim, Sang Ho (Department of Nano Semiconductor Engineering, Korea University)
  • Received : 2014.05.07
  • Accepted : 2014.06.25
  • Published : 2014.09.30

Abstract

Anisotropy coupling in thin films with mixed induced and shape anisotropies is investigated. A 200-nm-thick Co-Fe-Pd-B thin film with a large induced anisotropy of 57 Oe is fabricated and then patterned into micron-sized cells to provide shape anisotropy, whose strength has a similar magnitude to that of the induced anisotropy for enhancing the anisotropy coupling. The angles between the two mixed anisotropies considered are $0^{\circ}$, $90^{\circ}$, and $110^{\circ}$. Hysteresis loops measured under in-plane magnetic fields along various directions indicate no anisotropy coupling behaviour for all the three angles examined in this study.

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

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