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Magnetic properties of large-area particle arrays fabricated using block copolymer lithography

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6 Author(s)
Cheng, Joy Y. ; Dept. of Mater. Sci. & Eng., MIT, Cambridge, MA, USA ; Ross, C.A. ; Thomas, E.L. ; Smith, Henry I.
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50-nm period arrays of Co particles with widths of 35 nm and heights of 5-20 nm have been made using a self-assembled block copolymer lithography. The magnetic particles have in-plane anisotropy due to their shape, and show thermally activated reversal with an activation volume larger than their physical volume, which is attributed to magnetic interactions between the particles.

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Magnetics, IEEE Transactions on  (Volume:38 ,  Issue: 5 )