Fabrication of magnetic atom chips based on FePt

Details Fabrication of magnetic atom chips based on FePt Fabrication of magnetic atom chips based on FePt

2006-01-27

arxiv.org/abs/cond-mat/0601633v1

J. Magn. Magn. Mater. 313, 192-197 (2007)

Physics

Condensed Matter

Materials Science

5 pages, 5 figures

Scientific paper

10.1016/j.jmmm.2006.12.025

We describe the design and fabrication of novel all-magnetic atom chips for use in ultracold atom trapping. The considerations leading to the choice of nanocrystalline exchange coupled FePt as best material are discussed. Using stray field calculations, we designed patterns that function as magnetic atom traps. These patterns were realized by spark erosion of FePt foil and e-beam lithography of FePt film. A mirror magneto-optical trap (MMOT) was obtained using the stray field of the foil chip.

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