Abstract:
Nanostructured FeO films with an average nanoparticle size of the order of 6–10 nm were fabricated by laser electrodispersion. Annealing at $T$ = 300$^\circ$C in vacuum resulted in the disproportionation of FeO particles into Fe$_{3}$O$_{4}$ and $\alpha$-Fe, while the films exhibited a marked crystal orientation (texture with the [111] axis). The coercive force and the saturation magnetization of the synthesized nanostructured Fe$_{3}$O$_{4}/\alpha$-Fe films were as large as $\sim$660 Oe and $\sim$520 emu/cm$^3$, respectively. These values are considerably higher than the corresponding parameters of polycrystalline Fe$_{3}$O$_{4}$ films.