Applied Scientific Research, Section B

, Volume 8, Issue 1, pp 93–104

On the influence of shape and variations in conductivity of the sample on four-point measurements

  • Erik B. Hansen
Article
  • 64 Downloads

Summary

The influence of the finite size of the sample and of variations in conductivity through the sample on the voltage-current ratio found by fourpoint measurements is investigated. Expressions for this ratio are found for samples of infinite length and with rectangular or semi-circular cross-section. In the first case the influence of a finite length and of an exponential variation of the conductivity along the axis of the sample is examined. A chart showing the correction factor for a bar of rectangular cross-section is presented.

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References

  1. 1).
    Valdes, L. B., Proc. Inst. Radio Engrs.,42 (1954) 420.Google Scholar
  2. 2).
    Uhlir, A., Bell. Syst. Tech. J.,34 (1955) 105.MathSciNetGoogle Scholar
  3. 3).
    Laplume, J., Onde Electrique35 (1955) 113.Google Scholar
  4. 4).
    Smits, F. M., Bell Syst. Tech. J.,37 (1958) 711.Google Scholar
  5. 5).
    Uhlir, A., Bell Syst. Tech. J.34 (1955) 994.MathSciNetGoogle Scholar

Copyright information

© Martinus Nijhoff 1960

Authors and Affiliations

  • Erik B. Hansen
    • 1
  1. 1.The Haldor Topøe Research LaboratoryHellerupDenmark

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