Abstract
H. P. J. WIJN and others1 have described a novel method of making ‘Ferroxcube’ with a square hysteresis loop. Glass with a higher coefficient of expansion than the ‘Ferroxcube’ was fixed to a ring-shaped sample at an elevated temperature; the resulting strain at room temperature produced a square hysteresis loop. An experiment has been performed to show that a similar effect is possible with a permanent magnet alloy.
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Wijn, H. P. J., Gorter, E. W., Esveldt, C. J., and Geldermans, P., Philips Tech. Rev., 16, 49 (1954).
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GOULD, J., McCAIG, M. Production of Anisotropy in a Permanent Magnet by Pressure. Nature 176, 977 (1955). https://doi.org/10.1038/176977b0
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DOI: https://doi.org/10.1038/176977b0
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