Quantitative Fe content determination of powders by Mössbauer spectroscopy is described. In this method, powder samples and internal standard are combined homogeneously in a plastic film ensuring a thin absorber. This method was verified by quantifying the Fe content of a series of samples and independently confirming by inductively coupled plasma optical emission spectroscopic analysis. Additionally, for the first time, Fe contamination in ball-milled Si as a function of milling time was quantified. It was found that Fe contamination increased with time but surprisingly became steady state at 1.12 ± 0.04 at.% Fe after grain size reduction.
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The authors acknowledge financial support from NSERC, Novonix, 3M Canada, the Canada Foundation for Innovation, and the Atlantic Innovation Fund for this work.
The supplementary material for this article can be found at https://doi.org/10.1557/mrc.2019.158.
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Scott, B., Brown, C.A.M., Dunlap, R.A. et al. Quantitative composition determination by Mössbauer spectroscopy. MRS Communications 10, 123–128 (2020). https://doi.org/10.1557/mrc.2019.158