Heat Treatment Effect on Magnetic Properties of Finemet-Type Films

A study of the heat treatment effect on the structure and magnetic properties of the amorphous and nanocrystalline Finemet-type thin films of the compositions Fe73.9Si13.2B8.9Nb3Cu1 and Fe72.5Si14.2B8.7 Nb2Mo1.5Cu1.1 were performed by means of X-ray diffraction, magneto-optical Kerr-microscopy, and magnetic properties measurement system. The heat treatment leads to magnetic anisotropy decreasing as a result of crystallization processes, which are heavily dependent on the alloy's composition.The equipment of the Ural Center for Shared Use “Modern nanotechnology” UrFU was used. This work has been supported by the Ministry of Education and Science of the Russian Federation, Project no.1362. The authors very appreciate G.V. Kurlyandskaya, M.L. Fdez-Gubieda and Group of Magnetism and Magnetic Materials of the UPV-EHU for advanced training during guest stay at the Department of Electricity and Electronics of UPV-EHU. Selected measurements were made at SGIKER services of UPV-EHU