Temperature Coefficient of Electrical Resistance of High-Purity Rhodium (2024)

Letter
Published: 21 July 1962

E. G. PRICE¹ &
B. TAYLOR¹

Nature volume195,pages 272–273 (1962)Cite this article

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Abstract

THE temperature coefficient of electrical resistance between 0° C. and 100° C., (R₁₀₀–R₀)/100 R₀ is an accepted criterion of the purity of platinum. Very high-purity platinum, such as is used in the manufacture of resistance thermometers and thermocouples, has a temperature coefficient approaching 0.003927, and this represents the purest platinum commercially available. For rhodium, the other element used in standard thermocouples, the temperature coefficient of electrical resistance is not at present used for assessment of purity, but measurements made by us indicate that it might be a useful criterion for this metal also. The highest value recorded in the literature¹ for the temperature coefficient of electrical resistance, between 0° C. and 100° C., for high-purity rhodium is 0.00457.

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References

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Betteridge, W., Rhys, D. W., and Withers, D. F., paper presented at Fourth Symp. Temperature, Columbus, Ohio (Ohio, March 27, 1961).

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Authors and Affiliations

The International Nickel Co. (Mond), Ltd., Development and Research Department, Bashley Road, London, N.W.10
E. G. PRICE&B. TAYLOR

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E. G. PRICE
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B. TAYLOR
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PRICE, E., TAYLOR, B. Temperature Coefficient of Electrical Resistance of High-Purity Rhodium. Nature 195, 272–273 (1962). https://doi.org/10.1038/195272a0

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Issue Date: 21 July 1962
DOI: https://doi.org/10.1038/195272a0

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