Assembly and patterning of ferromagnetic nanoparticles from solution: A novel low-temperature liquid-phase annealing approach

T. Gang; M. Groen; S. Kinge

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Assembly and patterning of ferromagnetic nanoparticles from solution: A novel low-temperature liquid-phase annealing approach

机译：从溶液中组装和构图铁磁性纳米粒子：一种新型的低温液相退火方法

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Ferromagnetic L1_0-phase FePtAu nanoparticles (5-6 nm) were prepared using a low-temperature, liquid phase annealing approach. The chemically ordered, ferromagnetic L1_0-phase onset occurs for annealing temperatures as low as 150 C. Large uniaxial magnetic anisotropy (K_u ～ 10~7 erg/cm~3) and a large long-range ordering parameter have been obtained. Significantly, the low-temperature liquid-phase annealing preserves the organic functionalization groups of the nanoparticles. Hence, these nanoparticles are flexible for further assembly and patterning. In addition, we present the assembly of FePt nanoparticles on ferromagnetic substrates with a thin alumina capping layer.This enables us to investigate spin dependent transport through the FePt nanoparticles by scanning tunneling microscopy.

机译：使用低温液相退火方法制备了铁磁性的L1_0相FePtAu纳米粒子（5-6 nm）。在低至150℃的退火温度下会发生化学有序的铁磁L1_0相开始。获得了大的单轴磁各向异性（K_u〜10〜7 erg / cm〜3）和大的长程有序参数。重要的是，低温液相退火保留了纳米颗粒的有机官能团。因此，这些纳米颗粒对于进一步组装和图案化而言是柔性的。此外，我们介绍了FePt纳米粒子在具有薄氧化铝盖层的铁磁基体上的组装，这使我们能够通过扫描隧道显微镜研究通过FePt纳米粒子的自旋依赖性传输。

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《Synthetic Metals》 |2011年第8期|共5页
作者
T. Gang; M. Groen; S. Kinge;
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Magnetic nanoparticles; FePtAu; Solution annealing; Scanning tunneling microscopy; Spintronics;

机译：磁性纳米粒子;FePtAu;溶液退火;扫描隧道显微镜;自旋电子学;

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Assembly and patterning of ferromagnetic nanoparticles from solution: A novel low-temperature liquid-phase annealing approach

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