Local hysteresis variation of Co/Pd nanomultilayers
Local coercivity variation of Co/Pd nanomultilayers has been investigated by measuring the polar Kerr hysteresis loops of the local areas of submicron size using a magneto-optic Kerr microscope system. Interestingly, the local coercivity distribution was very sensitive to an increase in the number o...
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Veröffentlicht in: | Journal of applied physics 2000-05, Vol.87 (9), p.6848-6850 |
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Hauptverfasser: | , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Local coercivity variation of Co/Pd nanomultilayers has been investigated by measuring the polar Kerr hysteresis loops of the local areas of submicron size using a magneto-optic Kerr microscope system. Interestingly, the local coercivity distribution was very sensitive to an increase in the number of repeats: the (2 Å Co/11 Å Pd)10 sample showed a smooth variation of the local coercivity, while (2 Å Co/11 Å Pd)18 showed a large fluctuation. Based on the thermally activated relaxation model, we have found that this local coercivity variation had a crucial effect on the contrasting magnetization reversal behavior observed in those samples, wall-motion dominant for the former sample and nucleation dominant for the latter one. |
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ISSN: | 0021-8979 1089-7550 |
DOI: | 10.1063/1.372862 |