Shape effect on magnetization reversal in chains of interacting ferromagnetic elements

The magnetization reversal in the chains of submicron square- and disk-shaped Permalloy dots with lateral size of 800 nm, thickness of 50 nm and variable inter dot distance was investigated by using the magneto-optical Kerr effect technique, magnetic force microscopy and micromagnetic modeling. We h...

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Veröffentlicht in:Applied physics letters 2003-05, Vol.82 (21), p.3716-3718
Hauptverfasser: Novosad, V., Grimsditch, M., Darrouzet, J., Pearson, J., Bader, S. D., Metlushko, V., Guslienko, K., Otani, Y., Shima, H., Fukamichi, K.
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Sprache:eng
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Zusammenfassung:The magnetization reversal in the chains of submicron square- and disk-shaped Permalloy dots with lateral size of 800 nm, thickness of 50 nm and variable inter dot distance was investigated by using the magneto-optical Kerr effect technique, magnetic force microscopy and micromagnetic modeling. We have found that the particle shape strongly affects the characteristic switching fields of well-separated dots, and has almost no influence on strength of inter dot interaction in chains of magnetostatically coupled elements.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1577808