Compositional stability of FePt nanoparticles on SiO2/Si during annealing

Compositional stability of FePt nanoparticles on SiO2/Si during annealing
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DOI:
10.1063/1.2170064
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发表时间:
2006-04
影响因子:
3.2
通讯作者:
B. Yao;R. Petrova;R. Vanfleet;K. Coffey
B. Yao;R. Petrova;R. Vanfleet;K. Coffey
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
B. Yao;R. Petrova;R. Vanfleet;K. Coffey

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由于氧化或扩散到基底中而造成的 Fe 损失可能会妨碍成功制备有序的、化学计量的 FePt 纳米颗粒。在这项工作中,我们报告了在硅晶片基板上热生长的 SiO2 层上观察到的小(<10nm)FePt 纳米颗粒在退火过程中的成分变化。此外,我们描述了使用受控还原气体混合物 Ar+H2+H2O 来减少 Fe 的损失。
The loss of Fe due to oxidation or diffusion into the substrate can prevent the successful preparation of well-ordered, stoichiometric, FePt nanoparticles. In this work we report the composition changes during annealing observed for small (<10nm) FePt nanoparticles on thermally grown SiO2 layers on Si wafer substrates. Additionally, we describe the use of a controlled reducing gas mixture, Ar+H2+H2O, to reduce the loss of Fe.