Heat Treatment Effect on Magnetic Microstructure of Fe73.9Cu1Nb3Si13.2B8.9 Thin Films Evgeniya Mikhalitsyna, Ivan Zakharchuk, Ekaterina Soboleva, Pavel Geydt, Vasiliy Kataev, Vladimir Lepalovskij and Erkki Lähderanta EPJ Web Conf., 185 (2018) 04001 Published online: 04 July 2018 DOI: 10.1051/epjconf/201818504001