Letter | Published:

Heat Capacity and Resistivity Anomalies in Palladium Hydride

Naturevolume 191page271 (1961) | Download Citation



A RECENT paper on the electrical resistivity (ρ) of solutions of hydrogen in palladium1 records maxima at 43° K. and 52° K. for the compositions (hydrogen/palladium) 0.60 and 0.54 respectively, whereas there is a linear fall of ρ when the hydrogen/palladium ratio is 0.48. A reproduction of the curves of ρ versus T by Schindler et al. is shown in Fig. 1. The maximum is evident in the graphs for the composition 0.60, but not for the composition 0.54; however, the authors state that for this composition there is a definite maximum in the points at the lower temperatures.

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  1. 1

    Schindler, A. I., Smith, R. J., and Kramer, E. W., Intern. Inst. Refrig., Copenhagen (1959).

  2. 2

    Worsham, J. E., Wilkinson, M. K., and Shull, C. G., J. Phys. Chem., Solids, 3, 309 (1957).

  3. 3

    Nace, D. M., and Aston, J. G., J. Amer. Chem. Soc., 79, 3623 (1957).

  4. 4

    Everett, P. H., and Nordon, P., Proc. Roy. Soc., 209, 341 (1960).

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  1. Cryogenic Laboratory, College of Chemistry and Physics, Pennsylvania State University

    •  & J. G. ASTON


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