Phase Composition and Magnetic Properties of Nanoperm Thin Films Doped with Yttrium

Abstract

Thin lms of Nanoperm alloys with partial substitution of iron by yttrium are the subject of investigations. The attention is xed on the in uence of yttrium substitution on structure and magnetic characteristics of the samples. The e ect of lm thickness is also considered. Conversion electron Mossbauer spectroscopy and magneto-optic Kerr e ect were used to derive hyper ne parameters and coercive eld, respectively. Coexistence of crystalline bcc-Fe phase and an amorphous one with diverse proportion was stated in most of the samples. It was found that surface and interface regions contribute to the magnetic properties of lms.