Ultra fine scale phase separated microstructure for Ag–Fe nanoparticle

We report the formation of Ag–Fe nanoparticles with an ultrafine scale phase separated microstructure consisting of Ag and Fe3O4 phases. Ag–Fe particles were synthesised by the co-reduction of Ag and Fe salts in water medium. The co-existing Ag and Fe3O4 phase volumes were around ∼1 nm in one of the dimensions.