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Design and characterization of a field-switchable nanomagnetic atom mirror

Hayward, T.J.; West, A.D.; Weatherill, K.J.; Curran, P.J.; Fry, P.W.; Fundi, P.M.; Gibbs, M.R.J.; Schrefl, T.; Adams, C.S.; Hughes, I.G.; Bending, S.J.; Allwood, D.A.


T.J. Hayward

A.D. West

P.J. Curran

P.W. Fry

P.M. Fundi

M.R.J. Gibbs

T. Schrefl

S.J. Bending

D.A. Allwood


We present a design for a switchable nanomagnetic atom mirror formed by an array of 180° domain walls confined within Ni80Fe20 planar nanowires. A simple analytical model is developed which allows the magnetic field produced by the domain wall array to be calculated. This model is then used to optimize the geometry of the nanowires so as to maximize the reflectivity of the atom mirror. We then describe the fabrication of a nanowire array and characterize its magnetic behavior using magneto-optic Kerr effect magnetometry, scanning Hall probe microscopy, and micromagnetic simulations, demonstrating how the mobility of the domain walls allow the atom mirror to be switched “on” and “off” in a manner which would be impossible for conventional designs. Finally, we model the reflection of 87Rb atoms from the atom mirror’s surface, showing that our design is well suited for investigating interactions between domain walls and cold atoms.


Hayward, T., West, A., Weatherill, K., Curran, P., Fry, P., Fundi, P., …Allwood, D. (2010). Design and characterization of a field-switchable nanomagnetic atom mirror. Journal of Applied Physics, 108(4),

Journal Article Type Article
Publication Date Aug 1, 2010
Deposit Date Sep 24, 2010
Publicly Available Date Oct 6, 2010
Journal Journal of Applied Physics
Print ISSN 0021-8979
Electronic ISSN 1089-7550
Publisher American Institute of Physics
Peer Reviewed Not Peer Reviewed
Volume 108
Issue 4
Publisher URL


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