Abstract
S. RAMACHANDRA RAO has reported1 that, on testing colloidal powders of white tin magnetically, its paramagnetic susceptibility becomes diamagnetic as the particle size decreases, this diamagnetism increasing as the particle size decreases. A few years ago we often observed the same phenomenon in the investigation of the effect of cold-working on the susceptibility of white tin. In our case we found that the paramagnetic susceptibility of white tin changes its sign as the internal stress caused by cold-working increases, this value of diamagnetism increasing in proportion to internal stress. This change of susceptibility has been explained by a slight expansion of tin by cold-working2.
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References
NATURE, 134, 288, Aug. 25, 1934.
K. Honda and Y. Shimizu, NATURE, 132, 565; 1933. Y. Shimizu, Sci. Rep., 22, 915; 1933.
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HONDA, K., SHIMIZU, Y. Magnetism of Tin. Nature 135, 108 (1935). https://doi.org/10.1038/135108a0
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DOI: https://doi.org/10.1038/135108a0
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