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Magnetic anisotropies in epitaxial Fe3O4/GaAs(100) patterned structures

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Published copy (DOI)

Author(s)

  • W. Zhang
  • P. K J Wong
  • D. Zhang
  • S. J. Yuan
  • Z. C. Huang
  • Y. Zhai
  • J. Wu
  • Y. B. Xu

Department/unit(s)

Publication details

JournalRSC Advances
DatePublished - 1 Oct 2014
Issue number10
Volume4
Number of pages6
Original languageEnglish

Abstract

Previous studies on epitaxial Fe3O4 rings in the context of spin-transfer torque effect have revealed complicated and undesirable domain structures, attributed to the intrinsic fourfold magnetocrystalline anisotropy in the ferrite. In this Letter, we report a viable solution to this problem, utilizing a 6-nm-thick epitaxial Fe3O4 thin film on GaAs(100), where the fourfold magnetocrystalline anisotropy is negligible. We demonstrate that in the Fe3O4 planar wires patterned from our thin film, such a unique magnetic anisotropy system has been preserved, and relatively simple magnetic domain configurations compared to those previous reports can be obtained.

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