Figure 1.

XRD patterns of samples ignited at 600°C. The ratios of citric acid and iron nitrate are (a) 1.25:1, (b) 1:1, and (c) 1.5:1, respectively.

Hua et al. Nanoscale Research Letters 2012 7:129   doi:10.1186/1556-276X-7-129
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