Abstract
Middelhoek <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sup> 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. <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> 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. <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> This note proposes improvements in the experimental procedure, and reportss ome results which resolve the inconsistencies in the literature.
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