Electrical resistance of nickel in the range 300725 K and 02 GPa

B. Sundqvist
Phys. Rev. B 38, 12283 – Published 15 December 1988
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Abstract

The electrical resistance R of Ni has been measured as a function of temperature T and pressure p over the range 300725 K and 02 GPa (020 kbar). In contrast to recent reports, we see no anomalies in R(p) at 300 K, and we see no change in sign in dR/dp at the Curie temperature TC. The pressure coefficient of R was -1.82×102 GPa1 at 300 K, increasing with T to a peak value of -2.5×102 GPa1 at TC, above which it rapidly decreased to a value 20% below the room-temperature value. The data are analyzed using simple models; the resistivity at constant volume is found to deviate significantly from the constant-p data above TC and a small anomaly is detected in d(lnR)/dp that could possibly be an effect of band-structure changes at TC.

  • Received 18 July 1988

DOI:https://doi.org/10.1103/PhysRevB.38.12283

©1988 American Physical Society

Authors & Affiliations

B. Sundqvist

  • Department of Physics, University of Umeå, S-901 87 Umeå, Sweden

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Vol. 38, Iss. 17 — 15 December 1988

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