Tuning shape, composition and magnetization of 3D cobalt nanowires grown by focused electron beam induced deposition (FEBID)
Tuning shape, composition and magnetization of 3D cobalt nanowires grown by focused electron beam induced deposition (FEBID)
复制标题
通过聚焦电子束诱导沉积 (FEBID) 调整 3D 钴纳米线的形状、成分和磁化强度
DOI：
10.1088/1361-6463/aa63b4
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
J. D. de Teresa
中科院分区：
文献类型：
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作者：
Javier Pablo;D. Sanz;C. Magén;A. Fernández;J. D. de Teresa
通过优化生长参数，实现了高金属含量（≈80% at.）和小直径（<100 nm）的三维钴纳米线的电子束诱导沉积。已经确定了两种不同的生长模式，分别表示为径向和线性。在径向模式下，线径至少≈120nm， Co含量大于≈85%。在线性模式下，直径小于80 nm， Co含量最多≈80%。在特定的实验条件下，两种生长模式之间的急剧转变可以在单根纳米线内发生。电子全息测量表明，优化后的钴纳米线磁感应强度足够高，可用于自旋电子学、磁传感和纳米级驱动。
Electron beam induced deposition of 3D cobalt nanowires with simultaneous high metallic content (≈80% at.) and small diameter (<100 nm) has been achieved by optimization of the growth parameters. Two different growth modes have been identified, denoted as radial and linear. In the radial mode, the wire diameter is at least ≈120 nm and the Co content is greater than ≈85% at. In the linear mode, the diameter is smaller than 80 nm and the Co content is at best ≈80% at. A sharp transition between both growth modes can occur inside a single nanowire for certain experimental conditions. Electron holography measurements indicate that in optimized Co nanowires the magnetic induction is high enough for applications in spintronics, magnetic sensing and actuation at the nanoscale.