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Domain Wall Velocities in Thin Magnetic Films

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Wall mobility measurements employing short pulse drive fields show that in films with thicknesses up to 2000 Å the wall velocity is determined by spin relaxation effects rather than by eddy current damping. Further, it seems probable (a) that for high wall velocities the viscous flow approximation is no longer valid, (b) that Bloch lines are responsible for the low mobility of cross-tie walls and (c) that the energy dissipation that is related to a near moving domain walls is larger in films with higher Hc/Hk ratios

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

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IBM Journal of Research and Development  (Volume:10 ,  Issue: 4 )