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Coercivity of Ultrathin Magnetic Films with Perpendicular Anisotropy

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Zablotskii V., Kisielewski M., Tsiganenko O., Ferre J.
Acta Physica Polonica A
|
2000
|
vol. 97
|
issue 3
471-474
EN
The calculation of the temperature dependence of the domain wall coercivity of ultrathin magnetic films with perpendicular anisotropy is reported. In this case, the magnetization reversal is supposed to occur through domain wall motion. The proposed model takes into account thermal bending fluctuations of the domain wall, which is pinned by crystal defects such as grain boundaries. A fitting procedure, applied to recently published experimental data on the field induced domain wall velocity in Au/Co films, allows us to find out realistic values of the involved parameters.
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