Modeling of domain structure and anisotropy in glass-covered amorphous wires
Modeling of domain structure and anisotropy in glass-covered amorphous wires
复制标题
玻璃覆盖非晶丝中域结构和各向异性的建模
DOI：
10.1063/1.367603
复制
发表时间：
1998
影响因子：
3.2
通讯作者：
T. Óvári
中科院分区：
文献类型：
--
作者：
D. Ménard;D. Frankland;P. Ciureanu;A. Yelon;M. Rouabhi;R. Cochrane;H. Chiriac;T. Óvári
利用10 MHz的巨磁阻抗(GMI)和纵向磁化曲线研究了Co68.15Fe4.35Si12.5B15丝在玻璃包覆前后的各向异性。高分辨率GMI对磁场的响应显示出滞后和较大的巴克豪森跳跃，这与磁化曲线中观察到的结果很好地一致。这些都是通过叠加导线的内芯和外壳的响应来建模的。GMI响应是使用由该模型推导出的微分磁化率来计算的，从而将磁畴结构与观测到的磁阻抗联系起来。
Giant magnetoimpedance (GMI) at 10 MHz and longitudinal magnetization curves are used to investigate the anisotropy of Co68.15Fe4.35Si12.5B15 wires, glass-covered and after glass removal. The high resolution GMI response to the field shows hysteresis and large Barkhausen jumps, in good agreement with those observed in the magnetization curves. These are modeled through superposition of the response of the inner core and outer shell of the wires. The GMI response is calculated using the differential susceptibility deduced from the model, thus relating the domain structure to the observed magnetoimpedance.