| نویسندگان | Mehrdad Moradi, Mohammadreza Hajiali, Mahsa Khezri, S Ehsan Roozmeh, S Majid Mohseni |
|---|---|
| نشریه | Journal of Superconductivity and Novel Magnetism |
| شماره صفحات | 265-269 |
| شماره مجلد | 28 |
| نوع مقاله | Full Paper |
| تاریخ انتشار | 2014-10-01 |
| رتبه نشریه | ISI |
| نوع نشریه | الکترونیکی |
| کشور محل چاپ | ایران |
| نمایه نشریه | ISI |
چکیده مقاله
The effect of current annealing in the air and vacuum on structure and magnetoimpedance (MI) response of Co68.15 Fe4.35 Si12.5 B15 amorphous ribbons was investigated. After 15 min of annealing, we found optimized currents where maximum MI ratio reached to 125 % and 160 % for annealing in the air and vacuum, respectively. Sample structures and their magnetic properties were investigated to explain the MI response after the annealing. Variation ofMI responses can be correlated to the difference in the thermal conductivity of air and vacuum, field-induced anisotropy, and surface changes.