Switching asymmetries in closely coupled magnetic nanostructure arrays

R. E. Dunin-Borkowski, Martha McCartney, B. Kardynal, David Smith, M. R. Scheinfein

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Abstract

Cobalt nanostructures (220 and 300 nm × 275 nm × 30nm) were fabricated using electron beam lithography into ordered, close proximity (170 nm) arrays. Domain configurations with accompanying hysteresis loops were measured using off-axis electron holography. Measurements were compared to solutions of the Landau-Lifshitz-Gilbert equations. Both exhibit switching asymmetries due to strong intercell coupling and the presence of a field normal to the cell surface. Magnetic domain configurations during switching depended strongly on the initial conditions, as well as the direction of the perpendicular field relative to the in-plane hysteresis-field direction.

Original languageEnglish (US)
Pages (from-to)2641-2643
Number of pages3
JournalApplied Physics Letters
Volume75
Issue number17
DOIs
StatePublished - Oct 25 1999

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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