Co/Cu多层纳米线的磁性探测
Probing Magnetic Configurations in Co/Cu Multilayered Nanowires
摘要：
当磁性实体被埋在异质结构中时，异质结构中的磁性配置通常难以探测。在这项研究中，我们已经捕获的磁性和磁阻“指纹”的Co纳米盘嵌入在Co/Cu多层纳米线使用一阶反转曲线方法。在直径为200 nm的纳米线中，可以通过调节Co纳米盘的纵横比来调节磁性构型。具有最薄的Co纳米盘的纳米线表现出单畴行为，而具有较厚的Co的纳米线通过涡旋状态反转。巨磁电阻和各向异性磁电阻的叠加被观察到，这对应于不同的磁性配置的Co纳米盘。
英文摘要：
Magnetic configurations in heterostructures are often difficult to probe when the magnetic entities are buried inside. In this study we have captured magnetic and magnetoresistance "fingerprints" of Co nanodiscs embedded in Co/Cu multilayered nanowires using a first-order reversal curve method. In 200nm diameter nanowires, the magnetic configurations can be tuned by adjusting the Co nanodisc aspect ratio. Nanowires with the thinnest Co nanodiscs exhibit single domain behavior, while those with thicker Co reverse via vortex states. A superposition of giant and anisotropic magnetoresistance is observed, which corresponds to the different magnetic configurations of the Co nanodiscs.
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