doi: https://doi.org/10.1557/jmr.2017.394, Published by Cambridge University Press, 17 October 2017

In Hariskos and Powalla, ^{Reference Hariskos and Powalla1} page 6, first column, lines 14–16, the sentence reading “In contrast, sodium concentrations up to 50 at.% were detected on grain boundaries” should have read, “In contrast, sodium concentrations up to 4 at.% were detected on grain boundaries” as reported in the cited source. The authors regret this error.