Internal friction of interstitials in group 5 transition metals: A mean-field model for measurements interpretation

Abstract

We have built a mean-field elastic model able to reproduce internal friction peaks due to C, N, O interstitials in group 5 transition metals. Parameters of this model have all been computed from Density Functional Theory, except for jump frequencies that have been fitted on experimental data. For any experimentalist studying group 5 transition metals from mechanical spectroscopy, our mean-field model constitutes a ready-to-use tool, able to identify interstitial solutes from Snoek peaks temperature positions, and quantify their concentrations from Snoek peaks heights.