Fabrication of Scaffold-Based 3D Magnetic Nanowires for Domain Wall Applications.
Fabrication of Scaffold-Based 3D Magnetic Nanowires for Domain Wall Applications.
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DOI：
10.3390/nano8070483
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发表时间：
2018-06-30
期刊：
影响因子：
--
通讯作者：
Fernández-Pacheco A
中科院分区：
文献类型：
--
作者：
Sanz-Hernández D;Hamans RF;Osterrieth J;Liao JW;Skoric L;Fowlkes JD;Rack PD;Lippert A;Lee SF;Lavrijsen R;Fernández-Pacheco A
三维磁性纳米结构具有巨大的潜力，可以彻底改变信息技术，并使新的物理现象的研究成为可能。在这项工作中，我们描述了一种混合纳米工艺，结合自下而上的3D纳米打印和自上而下的薄膜沉积，这导致了复杂的磁性纳米结构的制造适合于新的3D磁效应的研究。首先，使用聚焦电子束诱导沉积纳米打印非磁性3D支架;然后将薄膜磁性材料热蒸发到支架上，得到功能性3D磁性纳米结构。通过引入双间距图案化策略，支架几何形状扩展到最近开发的单段几何形状之外。此外，通过在生长期间倾斜衬底，可以图案化低角度段，从而规避这种纳米印刷工艺的主要限制;这通过具有平行于衬底的段的“阶梯”纳米结构的制造来证明。纳米印刷支架支持热蒸发薄膜的适用性进行了讨论，概述了包括支柱，以防止在蒸发过程中变形的重要性。采用这套方法，一组纳米结构的定制，以精确匹配暗场磁光磁强计已被制造和表征。这项工作证明了这种混合技术的多功能性和所产生的纳米结构的有趣的磁性，为开发新的3D设备的应用和基础研究开辟了一条有前途的路线。
Three-dimensional magnetic nanostructures hold great potential to revolutionize information technologies and to enable the study of novel physical phenomena. In this work, we describe a hybrid nanofabrication process combining bottom-up 3D nano-printing and top-down thin film deposition, which leads to the fabrication of complex magnetic nanostructures suitable for the study of new 3D magnetic effects. First, a non-magnetic 3D scaffold is nano-printed using Focused Electron Beam Induced Deposition; then a thin film magnetic material is thermally evaporated onto the scaffold, leading to a functional 3D magnetic nanostructure. Scaffold geometries are extended beyond recently developed single-segment geometries by introducing a dual-pitch patterning strategy. Additionally, by tilting the substrate during growth, low-angle segments can be patterned, circumventing a major limitation of this nano-printing process; this is demonstrated by the fabrication of ‘staircase’ nanostructures with segments parallel to the substrate. The suitability of nano-printed scaffolds to support thermally evaporated thin films is discussed, outlining the importance of including supporting pillars to prevent deformation during the evaporation process. Employing this set of methods, a set of nanostructures tailored to precisely match a dark-field magneto-optical magnetometer have been fabricated and characterized. This work demonstrates the versatility of this hybrid technique and the interesting magnetic properties of the nanostructures produced, opening a promising route for the development of new 3D devices for applications and fundamental studies.
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影响因子：
--
作者：
Drouin, Dominique;Couture, Alexandre Real;Gauvin, Raynald
通讯作者：
Gauvin, Raynald
影响因子：
4
作者：
Verduci, T.;Rufo, C.;Vavassori, P.
通讯作者：
Vavassori, P.
影响因子：
5.9
作者：
Fowlkes, Jason D.;Winkler, R.;Plank, H.
通讯作者：
Plank, H.
影响因子：
17.1
作者：
Fowlkes, Jason D.;Winkler, Robert;Rack, Philip D.
通讯作者：
Rack, Philip D.
影响因子：
4
作者：
Pauleau, Y
通讯作者：
Pauleau, Y