Fernández-González Claudia, Guedeja-Marrón Alejandra, Rodilla Beatriz L, Arché-Nuñez Ana, Corcuera Rubén, Lucas Irene, González María Teresa, Varela Maria, de la Presa Patricia, Aballe Lucía, Pérez Lucas, Ruiz-Gómez Sandra
Instituto Madrileño de Estudios Avanzados-IMDEA Nanociencia, 28049 Madrid, Spain.
Departamento de Física de Materiales, Universidad Complutense de Madrid, 28040 Madrid, Spain.
Nanomaterials (Basel). 2022 Jul 26;12(15):2565. doi: 10.3390/nano12152565.
In the last few years, magnetic nanowires have gained attention due to their potential implementation as building blocks in spintronics applications and, in particular, in domain-wall- based devices. In these devices, the control of the magnetic properties is a must. Cylindrical magnetic nanowires can be synthesized rather easily by electrodeposition and the control of their magnetic properties can be achieved by modulating the composition of the nanowire along the axial direction. In this work, we report the possibility of introducing changes in the composition along the radial direction, increasing the degrees of freedom to harness the magnetization. In particular, we report the synthesis, using template-assisted deposition, of FeNi (or Co) magnetic nanowires, coated with a Au/Co (Au/FeNi) bilayer. The diameter of the nanowire as well as the thickness of both layers can be tuned at will. In addition to a detailed structural characterization, we report a preliminary study on the magnetic properties, establishing the role of each layer in the global collective behavior of the system.
在过去几年中，磁性纳米线因其在自旋电子学应用（特别是基于畴壁的器件）中作为构建单元的潜在应用而受到关注。在这些器件中，对磁性能的控制至关重要。通过电沉积可以相当容易地合成圆柱形磁性纳米线，并且可以通过沿轴向调制纳米线的组成来实现对其磁性能的控制。在这项工作中，我们报告了沿径向引入组成变化的可能性，从而增加了控制磁化的自由度。特别是，我们报告了使用模板辅助沉积法合成涂覆有Au/Co（Au/FeNi）双层的FeNi（或Co）磁性纳米线。纳米线的直径以及两层的厚度都可以随意调节。除了详细的结构表征外，我们还报告了对磁性能的初步研究，确定了每层在系统整体集体行为中的作用。
