Effects of substrate temperature on nanoparticle-assembled Fe films produced by ultrafast pulsed laser deposition

► Effects of substrate temperature on nanoparticle-assembled Fe films produced by fs-PLD. ► Low temperature magnetic behavior of nanoparticle-assembled Fe films produced by fs-PLD. ► Role played by the Fe oxide shell in stabilizing the core magnetic moments. ► Influence of the spin disorder in surface oxidized Fe nanoparticles on low temperature coercivity.