Abstract Amorphous ferromagnetic Fe-based microwires (MWs) have a magnetic structure consisting mainly of a single longitudinal domain and small closure domains at both ends. A rectangular hysteresis loop is then observed according to the fast domain wall propagation along the microwire. This type of material is a good physical example of the idea of a magnetic relay hysteron as described in Preisach model of hysteresis. The hysteron was defined as a mathematical operator acting on the field and producing rectangular loops whose superposition gives out the hysteresis loop. The hysteron idealization is frequently used to describe and interpret FORC (First Order Reversal Curve) diagrams by comparison with Preisach plane. The central idea of this work is to study the FORCs of a real physical sample that behaves closely to the ideal hysteron, both isolated and interacting with a twofold aim. On one hand, providing a better understanding of FORC measurements, and, on the other, analyzing the magnetization reversal processes in microwires with rectangular hysteresis loops. While for a single microwire the behaviour is that expected for a hysteron, both in the hysteresis loop and in the FORC diagram, the magnetostatic interaction between two microwires breaks with the ideal behaviour due to the change in the domain wall mobility at the end of the wires.

中文翻译：

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通过一阶反转曲线研究相互作用的铁基微丝中的双稳态行为

摘要 非晶铁磁铁基微丝（MWs）具有主要由单个纵向畴和两端小的闭合畴组成的磁性结构。然后根据沿微丝的快速畴壁传播观察到矩形磁滞回线。这种类型的材料是 Preisach 磁滞模型中描述的磁继电器迟滞概念的一个很好的物理例子。迟滞被定义为作用在场上并产生矩形环的数学算子，其叠加给出滞后环。迟滞理想化常用于通过与 Preisach 平面进行比较来描述和解释 FORC（一阶反转曲线）图。这项工作的中心思想是研究真实物理样本的 FORC，该样本的行为与理想迟滞很接近，既孤立又相互作用，具有双重目标。一方面，提供对 FORC 测量的更好理解，另一方面，分析具有矩形磁滞回线的微丝中的磁化反转过程。虽然对于单根微线，在磁滞回线和 FORC 图中，行为与迟滞的预期行为相同，但由于磁滞结束时畴壁迁移率的变化，两条微线之间的静磁相互作用与理想行为中断电线。