On the magnetization textures in NiPd nanostructures

Details On the magnetization textures in NiPd nanostructures On the magnetization textures in NiPd nanostructures

2011-05-25

arxiv.org/abs/1105.4946v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 9 figures

Scientific paper

We have observed peculiar magnetization textures in Ni$_{80}$Pd$_{20}$ nanostructures using three different imaging techniques: magnetic force microscopy, photoemission electron microscopy under polarized X-ray absorption, and scanning electron microscopy with polarization analysis. The appearances of diamond-like domains with strong lateral charges and of weak stripe structures bring into evidence the presence of both a transverse and a perpendicular anisotropy in these nanostrips. This anisotropy is seen to reinforce as temperature decreases, as testified by a simplified domain structure at 150 K. A thermal stress relaxation model is proposed to account for these observations. Elastic calculations coupled to micromagnetic simulations support qualitatively this model.

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