“…Despite the relatively large remanence value, the NPs in NHS-1 are still too soft to be used as building blocks for PM. In fact, the BH max , evaluated after rescaling the magnetization for the volume estimated from the phase densities obtained from XPS and using the demagnetization factor (N ∥ = 0.1) 38 to take into account the internal field of the pellet, was 8 kJ m −3 . Although the proposed synthesis method proved to be an efficient route to obtain a metal/ferrite exchange coupled nanostructure, designing a system with enhanced BH max , exploitable for practical applications, requires the increase of the magnetic anisotropy of the spinel ferrite component.…”