Magnetic Properties of NaKCoFe Prussian Blue Analogues Nanoparticles

Spherical and cubic nanoparticles of cobalt-iron Prussian blue analogues (NaKCoFe PBA) with morphologies from 5 nm sphere to 80 nm cube were synthesized in sodium bis (2-ethylhexyl) sulfosuccinate(AOT) / isooctane/water microemulsion, by tuning the water-to-surfactant molar ratio (w) and the concentration ratio of reactants. It is observed that reaction condition not only affects the morphologies of the products, but also has influence on the structure of the products. Furthermore, these products were characterized by UV, XRD, EDS, ICP, IR and superconducting quantum interference device magnetometer (SQUID) techniques. The results show that magnetic properties of NaKCoFe Prussian blue analogues are strongly influenced by the amount of the alkali cation.