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Origins of switching field distributions in perpendicular magnetic nanodot arrays

Published

Author(s)

Justin Shaw, William Rippard, Stephen E. Russek, Tim Reith, Charles M. Falco

Abstract

We studied the reversal properties of perpendicularly magnetized Co/Pd nanodots from 100 to 50 nm in diameter fabricated using electron beam lithography. Polycrystalline Co/Pd multilayers show considerable differences in the switching field distribution (SFD) depending on the seed layer used. With a Ta seed layer, we reduced the SFD to approximately 5% of the average switching field. To rule out effects of grain boundaries, we also fabricated nanodot arrays from epitaxial Co/Pd superlattices. Although significant improvement in SFDs are obtained using epitaxial superlattices, our results indicate that grain boundary variation within nanodots is not the primary origin of SFD broadening that occurs with nanopatterning.
Citation
Journal of Applied Physics
Volume
101

Keywords

magnetism, multilayer, nanodots, nanostructure, patterned media

Citation

Shaw, J. , Rippard, W. , Russek, S. , Reith, T. and Falco, C. (2007), Origins of switching field distributions in perpendicular magnetic nanodot arrays, Journal of Applied Physics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32427 (Accessed July 19, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created January 18, 2007, Updated October 12, 2021