Figure 3.

Representative TEM images of as-synthesized (A) Gd:Fe3O4 nanocores; (B) gold-silver alloy (Au:Ag = 1:1) nanoparticles; and gold-silver alloy (Au:Ag = 5:1) nanoparticles.

Gheorghe et al. Nanoscale Research Letters 2011 6:554   doi:10.1186/1556-276X-6-554
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