Figure 6.

XPS spectra and corresponding fittings of B powder milled with (red) and without (blue) Fe(NO3)3. (a) Survey scans, (b) N 1s region, (c) B 1s region and (d) Fe 2p region.

Li et al. Nanoscale Research Letters 2012 7:417   doi:10.1186/1556-276X-7-417
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