Residual Resistivity Measurements on High RRR Aluminum by the Eddy Current Decay Method

  • K. T. Hartwig
  • H. Zou
Part of the An International Cryogenic Materials Conference Publication book series (ACRE, volume 40)


Measurements of resistivity at 4.2 K by the eddy current decay (ECD) method on high RRR aluminum reveal that the ECD primary coil field level may influence results. Measurements are reported for magnetic flux densities of 40 to 400 gauss, on large polycrystalline specimens with nominal RRR values of 5000 and 10,000 as well as on large 15,000-20,000 RRR single crystal specimens. The true “zero-field” resistivity (p“) is determined by extrapolation. A graphical method for determining approximate po values from one measurement of resistivity is presented along with a listing of approximate errors for resistivity measurements at various field levels.


Flux Density Pure Aluminum Residual Resistivity Field Level Secondary Coil 
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  1. 1.
    A. Takahashi and K.T. Hartwig, “Fabrication and Properties of High Purity Single Crystal Aluminum for Low Temperature Conductors,” Proceedings of the First Int’l. Conf. on Processing Materials for Properties, TMS, 901 (1993).Google Scholar
  2. 2.
    C.P. Bean, R.W. Deblois, and L.B. Nesbitt, “Eddy Current Method for Measuring the Resistivity of Metals,” J. Appl. Phys 30 1976 (1959).Google Scholar
  3. 3.
    A.F. Clark, V.A. Deason, J.G. Hust, and R.C. Powell, “Standard Reference Materials: the Eddy Current Decay Method for Resistivity Characterization of High Purity Metals,” NBS Special Publication 260–39, National Bureau of Standards, Washington, DC (1972).Google Scholar
  4. 4.
    F.R. Fickett, “Magnetoresistance of Very Pure Polycrystalline Aluminum,” Phys. Rev. 3 1941 (1971).Google Scholar
  5. 5.
    R.J. Balcombe, “The Magnetoresistance of Aluminum”, Proc. Roy. Soc. (London) A275 113 (1963).Google Scholar

Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • K. T. Hartwig
    • 1
  • H. Zou
    • 1
  1. 1.Department of Mechanical EngineeringTexas A&M UniversityCollege StationUSA

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