Post-treatment effects on the magnetic anisotropy of iron based metallic amorphous ribbons
Journal
Journal of Magnetism and Magnetic Materials
Journal Volume
461
Pages
106-110
Date Issued
2018
Author(s)
Abstract
The effects of acid and heat treatment on the magnetic anisotropy of amorphous Fe67Co10Cr3Si5B15 ribbons are studied, using the angular-dependent magnetization and ferromagnetic resonance (FMR). The change of FMR spectrum after acid treatment indicates that the surface precipitates in raw sample contain some magnetic elements. A post annealing under the field of 2000 Oe is applied to modify the magnetic anisotropy of ribbons, with the annealing temperature varying from 370 to 410 °C. At 370 °C, a magnetoelastic anisotropy field of +40 Oe is found in the sample with 60 min acid-treatment, while it is −74 Oe for the sample with 30 min acid-treatment. However, it approaches to zero at 410 °C for all samples, indicating the internal stress is fully released. This study demonstrates that FMR is an effective technique on investigating the details of magnetic anisotropy configuration against various post-treatment conditions for amorphous ribbons.
SDGs
Type
journal article