| The mechanical alloying of Li with three kinds of Fe powders was performed under various milling conditions. Only in the case of using one kind of Fe powder among three, the formation of Fe-Li supersaturated solid solution was confirmed by X-ray diffraction after 10 h milling. The detailed investigation by Moessbauer spectroscopy and saturation magnetization measurement supports the result. XPS (X-ray photo-electron spectroscopy) measurements were also performed to investigate the surface chemistry of samples. The existence of oxide plays an important role in effective promoting of mechanical alloying in this system. |
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