Negative Mobility of Single Domain Wall in Magnetic Microwires |
| R. Vargaa, K. Richtera and A. Zhukovb
aInstitute of Physics, Faculty of Sciences, P.J. Safarik University, Park Angelinum 9, 041 54 Kosice, Slovakia bDept. Fisica de Materiales, Fac. Quimica, UPV/EHU, San Sebastian, Spain |
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| Here, we present the domain wall dynamics in thin magnetic wires that exhibit even negative mobility regime. Such a regime is well below the Walker limit and is a result of structural relaxation. It disappears at high frequencies and it can be enhanced by application of mechanical stress. Moreover, the domain wall velocity was found to be almost field-independent at certain measuring conditions. Anyway, the domain wall velocity remains quite high (> 450 m/s) in this regime. |
| DOI: 10.12693/APhysPolA.118.747 PACS numbers: 75.60.Ej, 75.60.Jk |