A theory of the shape of spike-like magnetic domains

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Abstract
Spike-like magnetic domains play several important parts in the magnetization processes occurring in a hysteresis cycle, especially in a material magnetized in an easy direction of magnetization, such as transformer sheet. This theory is applicable to the spike domains observable in bulk magnetic materials but not, unfortunately, to thin magnetic films. A comparison was made between the calculated shape of a spike domain and that of such domains in 3% silicon-iron, the latter being available in the form of photographs. As far as could be determined from the photographs the calculated shape was an exact fit to the observed shape.

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