Fe:O:C grown by focused-electron-beam-induced deposition: magnetic and electric properties
Fe:O:C grown by focused-electron-beam-induced deposition: magnetic and electric properties
复制标题
通过聚焦电子束诱导沉积生长的 Fe:O:C：磁和电特性
作者：
R. Lavrijsen;R. Córdoba;F. J. Schoenaker;T. Ellis;B. Barcones;J. T. Kohlhepp;H. Swagten;B. Koopmans;J. D. de Teresa;C. Magén;M. Ibarra;P. Trompenaars;J. Mulders
系统地研究了氧含量对聚焦电子束诱导（FEBID）沉积Fe:O:C纳米线磁输运和微观结构的影响。铁/氧比可以随着铁含量在~ 50 ~ 80 at之间变化而变化。%，总体碳含量低（≈16±3 at）。%)，在沉积过程中加入H2O，同时保持光束参数恒定，通过能量色散x射线（EDX）光谱测量。研究了铁含量为66 ~ 71 at的镀层的室温磁性能。使用磁光克尔效应（MOKE）和电磁输运测量来研究。通过横截面高分辨率透射电子显微镜（HRTEM）成像研究了沉积物的纳米结构，使我们能够将观察到的磁电阻和电阻率与沉积物中的输运机制联系起来。这些结果表明，功能磁性纳米结构可以被创造出来，为新的磁性甚至自旋电子学器件铺平了道路。
We systematically study the effect of oxygen content on the magneto-transport and microstructure of Fe:O:C nanowires deposited by focused-electron-beam-induced (FEBID) deposition. The Fe/O ratio can be varied with an Fe content varying between ∼ 50 and 80 at.% with overall low C content (≈16 ± 3 at.%) by adding H2O during the deposition while keeping the beam parameters constant as measured by energy dispersive x-ray (EDX) spectroscopy. The room-temperature magnetic properties for deposits with an Fe content of 66–71 at.% are investigated using the magneto-optical Kerr effect (MOKE) and electric magneto-transport measurements. The nanostructure of the deposits is investigated through cross-sectional high-resolution transmission electron microscopy (HRTEM) imaging, allowing us to link the observed magneto-resistance and resistivity to the transport mechanism in the deposits. These results demonstrate that functional magnetic nanostructures can be created, paving the way for new magnetic or even spintronics devices.