Sha Guorong, Yang Chao, Song Zenglu, Takemura Yasushi
Department of Electrical and Computer Engineering, Yokohama National University, Yokohama 240-8501, Japan.
School of Transportation Engineering, Nanjing Vocational University of Industry Technology, Nanjing 210023, China.
Materials (Basel). 2022 Aug 27;15(17):5936. doi: 10.3390/ma15175936.
Wiegand wires exhibit a unique fast magnetization reversal feature in the soft layer that is accompanied by a large Barkhausen jump, which is also known as the Wiegand effect. However, the magnetic structure and interaction in Wiegand wires cannot be evaluated by conventional magnetization hysteresis curves. We analyzed the magnetic properties of Wiegand wires at various lengths by measuring the first-order reversal curves (FORCs) and by evaluating the FORC diagram from a series of FORCs. In particular, we used a FeCoV Wiegand wire with a magnetic soft outer layer, an intermediate layer, and a hard core. The magnetization of the various layers in the wire could be identified from the FORC diagrams. Furthermore, based on the interaction between multiple layers, the positive and negative polarity of the FORC distribution was clarified.
维根德丝在软磁层中展现出独特的快速磁化反转特性，同时伴有大幅度的巴克豪森跳跃，这一现象也被称为维根德效应。然而，传统的磁化滞后曲线无法评估维根德丝中的磁结构和相互作用。我们通过测量一阶反转曲线（FORC）并从一系列FORC评估FORC图，分析了不同长度维根德丝的磁性能。具体而言，我们使用了一种具有磁性软外层、中间层和硬芯的FeCoV维根德丝。从FORC图中可以识别出丝中各层的磁化情况。此外，基于多层之间的相互作用，明确了FORC分布的正负极性。
