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Domain Wall Energy Measurements using Narrow Permalloy Strips

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4 Author(s)

Middelhoek1 proposed in 1961 that the domain structure of narrow thin film strips could be used to measure energies of domain walls and Kuwahara et al. have likewise suggested this method.2 When measurements were attempted by these authors it was found that experimental results of wall energy were about a factor of four lower than calculated values. Furthermore, and contrary to theoretical calculations, there was no variation of wall energy density with film thicknes.2 This note proposes improvements in the experimental procedure, and reportss ome results which resolve the inconsistencies in the literature.

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:11 ,  Issue: 5 )