Giant magnetoimpedance effect and dipolar interactions of FINEMET/IGZO/CoFeSiB composite ribbons

作者：Guo, Yongbin; Zhang, Xiaoxuan; Wang, Dao; Xu, Wenqing; Li, Yizhang; Li, Ke; Wang, Zhongmin^*; Zhao, Zhenjie^*

来源：Composite Interfaces, 2023, 30(10): 1035-1043.

DOI：10.1080/09276440.2023.2180852

• Giant magnetoimpedance
• dipolar interactions
• composite ribbons
• CoFeSiB film

The dipolar interactions were investigated through the giant magnetoimpedance effect in FINEMET/IGZO/CoFeSiB composite ribbons. The interface between the CoFeSiB film and FINEMET ribbon was separated by IGZO layer in FINEMET/IGZO/CoFeSiB composite ribbons, which effectively induced dipolar interactions. The dipolar interactions were analyzed by the peak position field (H-p) of giant magnetoimpedance effect and magnetic properties. The results show that the H-p decreased with the increase of the IGZO layer thickness. These results suggest that the GMI ratio (58%) and characteristic frequency (800 kHz) were optimized. The composite ribbons have high GMI ratio and low frequency, which can be applied in magnetic field sensors.