Abstract
IN recent years various observers have investigated the magnetisation of single iron crystals. Their results differ in several important respects. From investigations of iron crystals made in these laboratories, we believe that the observed differences are ascribable mainly to the unsatisfactory accuracy with which magnetic field intensity has been estimated when the demagnetisation factor is very large, or when it is a function of the magnetisation, as it is in specimens that are not ellipsoids. In the latter case, the only way in which the field intensity can be determined is by direct measurement. Experimenters, strangely enough, have seldom employed this procedure, preferring rather to rely on calculation of the demagnetising component of the field intensity by methods which have been shown to rest on invalid assumptions.
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FOSTER, D., BOZORTH, R. Nature of the Magnetisation Curve of Single Iron Crystals. Nature 125, 525 (1930). https://doi.org/10.1038/125525a0
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DOI: https://doi.org/10.1038/125525a0
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