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Thin films of Fe have been epitaxially sputtered on GaAs substrates with native oxide removal prior to the deposition carried out by an Ar ion milling. Films grown at substrate temperatures above 100 °C show well-defined fourfold anisotropies. The onset of epitaxial growth is accompanied by an increase in the surface roughness with growth occurring in a distinct island-like pattern. The Fe layers...
Vertical shift registers and 3-dimensional magnetic memory structures potentially provide a revolutionary increase in the areal density of magnetic data storage devices [1-3]. The Ruderman-Kit-tel-Kasuya-Yosida (RKKY) exchange coupled magnetic multilayer architecture proposed in [2] uses a localized topological soliton as a bit of information. The nucleation and injection of this bit, which is a form...
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