FeCuNbSiB Thin Films Deposited by Pulsed Laser Deposition: Structural and Magnetic Properties

Using the pulsed laser ablation technique, Fe73.5Cu1Nb3Si15.5B7 amorphous thin films, with smooth and uniform surfaces, have been deposited on glass and silicon substrates. Based on the information provided by the thermomagnetic analysis, the nanocrystalline state was achieved after the thermal treatment performed at 460 oC. In nanocrystalline state, the samples present an 80% lower coercive magnetic field and a 3.5 times higher saturation magnetization with respect to the as-deposited state.