Dispersive charge carrier mobility in a surface oxide layer

Gabor Nagy, Robert Schiller

Research output: Contribution to journalArticle

11 Citations (Scopus)


The electrode impedance spectrum of the oxide produced on a Zr-1%Nb surface in an aqueous solution at 290°C is analysed as a function of temperature between 20°C and 290°C. The portion of the spectrum, relevant to the oxide, is treated in terms of a parallel CPEk∥Rox equivalent circuit (CPE denoting constant phase element, Rox ohmic resistor). Considering also the effect of temperature CPE is understood as a dispersive resistance described by the continuous time random walk theory of Scher and Lax. Distinction is made between the kinetics of oxide growth and of non-Faraday charge transport, the time constant of the latter being obtained directly from impedance data.

Original languageEnglish
Pages (from-to)791-794
Number of pages4
JournalPhysical Chemistry Chemical Physics
Issue number5
Publication statusPublished - 2002

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Fingerprint Dive into the research topics of 'Dispersive charge carrier mobility in a surface oxide layer'. Together they form a unique fingerprint.

  • Cite this