• Air-exposure effect on the resistivity of thin bismuth films

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Resistivity; grain boundary; oxidation; air-exposure; continuous films; discontinuous films

    • Abstract


      A survey of previous studies on vacuum deposited metal films shows that in high frequency measurements, explicit reference to the effect of air-exposure is not made. The present work on bismuth films (in-situ and air-exposed) at dc and rf frequencies, carried out mainly to study the air-exposure effect, shows that in-situdc and rf and exposed rf all show nearly the same resistivity for thick continuous films. But air-exposed dc film resistances, when compared to in-situdc resistances, show that the grain boundary reflection coefficient, Rgin Mayadas-Shatzkes model changes from 0·2 to 0·6. This is shown to be due to the grain boundary oxidation. The result is substantiated by rf measurements.

    • Author Affiliations


      S A Gangal1 R N Karekar1

      1. Department of Physics, University of Poona, Pune - 411 007, India
    • Dates

  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.