Bukreev Dmitry A, Derevyanko Michael S, Semirov Alexander V
Department of Physics, Pedagogical Institute, Irkutsk State University, 664003 Irkutsk, Russia.
Sensors (Basel). 2023 Oct 7;23(19):8283. doi: 10.3390/s23198283.
The results of a computer simulation and experimental study of the magnetoimpedance effect (MI) in amorphous CoFeSiB and CoFeMoSiB ribbons in the ac frequency range from 0.01 to 100 MHz are presented. It was found that the maximum MI value exceeds 200%, which may be of interest in the development of magnetic field sensors. It is also shown that practically significant characteristics of the MI response strongly depend on the ac frequency, which is due to the inhomogeneous distribution of magnetic properties over the ribbon cross section. This distribution was studied using magnetoimpedance tomography based on the analysis of the experimental dependences of the reduced impedance on the ac frequency.
本文给出了非晶态CoFeSiB和CoFeMoSiB薄带在0.01至100 MHz交流频率范围内磁阻抗效应（MI）的计算机模拟和实验研究结果。研究发现，最大MI值超过200%，这在磁场传感器的开发中可能具有重要意义。研究还表明，MI响应的实际重要特性强烈依赖于交流频率，这是由于薄带横截面磁性能的不均匀分布所致。基于对折合阻抗与交流频率的实验依赖性分析，利用磁阻抗断层成像技术对这种分布进行了研究。
