论文标题

纳米线设计Fe,Ni和/或Feni-Aloy纳米颗粒的磁性收集

Nanowire design by magnetic collection of Fe, Ni and/or FeNi-alloy nanoparticles

论文作者

Ekeroth, Sebastian, Boyd, Robert, Brenning, Nils, Helmersson, Ulf

论文摘要

仅通过更改电源中的脉冲参数来生长具有不同元素组成的纳米颗粒的方法。该技术基于高功率脉冲空心阴极溅射,颗粒组成的差异范围从纯Fe和Ni到完全合金的Feni颗粒。为了使用高功率脉冲生长纳米颗粒,需要从空心阴极中发出几种脉冲或突发。考虑到这一点,我们设计了一个设置,该设置彼此附近有两个不同的材料Fe和Ni的空心阴极。通过使用两个电源和一个同步单元,控制每个元素的脉冲的数量和大小到纳米颗粒的生长状态中,并控制两个元素的离子的可调混合物。我们在这里表明,两个目标高功率空心阴极溅射单元可能是快速原型制作更高级,定制,纳米颗粒的强大工具,对于众多应用来说,这可能非常重要。

A method for growing nanoparticles with different elemental compositions simply by changing pulsing parameters in a power supply is demonstrated. The technique is based on high power pulsed hollow cathode sputtering, and the difference in particle composition ranges from pure Fe and Ni, to fully alloyed FeNi particles. Several pulses, or bursts, from a hollow cathode are needed in order to grow a nanoparticle using high power pulses. With this in mind, we devised a setup with two hollow cathodes of different material, Fe and Ni, situated in the vicinity of each other. By using two power supplies and a synchronization unit, the number and size of pulses of each element into the growth regime of the nanoparticles is controlled, and a tunable mixture of ions of the two elements is ensured. We here show that the two-target high power hollow cathode sputtering unit can be a powerful tool for rapid prototyping of more advanced, customized, nanoparticles, which can be of great importance for numerous applications.

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