Figure 2.

TEM bright field images of Fe@Fe2O3 core-shell nanowires. Panels (a) and (b) indicate the as-synthesized sample. Panels (c) and (d) indicate the 4-h annealed sample.

Cao et al. Nanoscale Research Letters 2013 8:423   doi:10.1186/1556-276X-8-423
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