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Annealing-induced Fe oxide nanostructures on GaAs

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JournalIEEE Transactions on Magnetics
DatePublished - Oct 2005
Issue number10
Volume41
Number of pages3
Pages (from-to)3328-3330
Original languageEnglish

Abstract

We report the evolution of Fe oxide nanostructures on GaAs(100) upon pre- and post-growth annealing conditions. GaAs nanoscale pyramids were formed on the GaAs surface due to wet etching and thermal annealing. An 8.0-nm epitaxial Fe film was grown, oxidized, and annealed using a gradient temperature method. During the process the nanostripes were formed, and the evolution has been demonstrated using transmission and reflection high energy electron diffraction, and scanning electron microscopy. These nanostripes; exhibited uniaxial magnetic anisotropy. The formation of these nanostructures is attributed to surface anisotropy, which in addition could explain the observed uniaxial magnetic anisotropy.

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    Research areas

  • annealing, magnetic Fe oxide, magnetic uniaxial anisotropy, nanostructures

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