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International Conference on Nanotechnology

Preparation and properties of perpendicularly magnetized grooved GdTbFeCo microstructures for atom optics

David S. Gough, Peter Hannaford, Russell McLean, Andrei I. Sidorov, James Wang, S. Whitlock

Published Jan 1, 2004• 0 citations
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Periodically grooved, micron-scale structures incorporating perpendicularly magnetized Gd10Tb6Fe80Co4 magneto-optical films have been fabricated and characterized. Such structures produce a magnetic field having flat equipotentials and whose magnitude decays exponentially with distance above the surface, making them attractive for manipulating ultracold atoms in atom optics. The GdTbFeCo films have been deposited on a Cr underlayer on a silicon (100) wafer and on a grooved silicon microstructure using DC magnetron sputtering. The films are found to have excellent magnetic properties for magnetic atom optics applications, including high remanent magnetization, high coercivity and excellent homogeneity.

Journal of Physics D Applied Physics•Nov 7, 2005•25 citations
Periodically grooved, micron-scale structures incorporating perpendicularly magnetized Gd10Tb6Fe80Co4 magneto-optical films have been fabricated and characterized. Such structures produce a magnetic field having flat equipotentials and whose magnitude decays exponentially with distance above the surface, making them attractive for manipulating ultracold atoms in atom optics. The GdTbFeCo films have been deposited on a Cr underlayer on a silicon (100) wafer and on a grooved silicon microstructure using DC magnetron sputtering. The films are found to have excellent magnetic properties for magnetic atom optics applications, including high remanent magnetization, high coercivity and excellent homogeneity.