Figure 2.

The size distribution histograms and corresponding Gaussian fits. (a) 0.0%, (b) 0.5%, (c) 1.0%, (d) 2.5% and (e) 5.0% (nominal) of the Eu dopant. Variation of the particle size with dopant concentration is shown in the bottom right. The average diameter decreased exponentially with the increasing molar concentration of Eu+3 ions.

Pal et al. Nanoscale Research Letters 2012 7:1   doi:10.1186/1556-276X-7-1
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