论文标题
薄铁磁膜中域壁与固定障碍之间相互作用的强度和长度尺度
Strength and length-scale of the interaction between domain walls and pinning disorder in thin ferromagnetic films
论文作者
论文摘要
我们探索了由PT/CO/PT，AU/CO/CO/PT和PT/CO/AU制成的薄铁磁膜中磁场壁的磁场驱动运动。通过对域壁动力学的分析，我们提取参数，这些参数表征了域壁和薄膜弱夹的障碍之间的相互作用。发现由平面内场控制的域壁结构的变化可修改与域壁宽度强相关的特征长度尺度，无论其手性如何以及域壁之间的相互作用强度和固定缺陷之间的相互作用强度。这些发现也应与在弱钉无序介质中移动的各种弹性接口有关。
We explore the magnetic-field-driven motion of domain walls with different chiralities in thin ferromagnetic films made of Pt/Co/Pt, Au/Co/Pt, and Pt/Co/Au. From the analysis of domain wall dynamics, we extract parameters characterizing the interaction between domain walls and weak pinning disorder of the films. The variations of domain wall structure, controlled by an in-plane field, are found to modify the characteristic length-scale of pinning in strong correlation with the domain wall width, whatever its chirality and the interaction strength between domain walls and pinning defects. These findings should be also relevant for a wide variety of elastic interfaces moving in weak pinning disordered media.
