Article,

Thickness dependent magnetization states of Fe islands on W(110): From single domain to vortex and diamond patterns

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Applied Physics Letters, 84 (6): 948-950 (2004)
DOI: http://dx.doi.org/10.1063/1.1644613

Abstract

We have studied the thickness dependent domain configuration of single-crystal nanoscale Fe islands on W(110) by spin-polarized scanning tunneling microscopy. The experimental results are compared with micromagnetic calculations. For very thin islands, the uniaxial surface anisotropy of Fe/W(110) leads to a single domain state. With increasing island thickness, the magnetostatic energy becomes increasingly important resulting in different flux closure configurations.

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