Abstract
The kinetics of the formation of a new phase at the interface between the LaF3:Eu2+ single crystal and the (Sn, Bi, or Sb) metallic electrodes was studied using potentiostatic transient measurements and voltammetry with a linear variation of voltage. A comparison of the theoretical and experimental reduced transients that define two-dimensional instantaneous nucleation on a plot of I/I m vs. t/t m and three-dimensional growth of the instantaneous and progressive types of nucleation on a plot of I 2/I 2m vs. t/t m showed that the model was not fully consistent with the experiment. The dependence of the stationary current logI A(max) of the potentiostatic transients on 1/η during the formation of the intermediate phase on the boundaries of LaF3:Eu2+|Sn and LaF3:Eu2+|Bi was found to be linear, which corresponds to two-dimensional nucleation and growth of the new phase.
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Original Russian Text © M.S. Turaeva, I.V. Tarasenkova, 2011, published in Elektrokhimiya, 2011, Vol. 47, No. 6, pp. 687–693.
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Turaeva, M.S., Tarasenkova, I.V. Electrochemical formation of a low-dimensional phase on the boundary between the LaF3:Eu2+ single crystal and the metal. Russ J Electrochem 47, 643–649 (2011). https://doi.org/10.1134/S1023193511060152
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DOI: https://doi.org/10.1134/S1023193511060152