Linear arrangement of nano-scale magnetic particles formed in Cu–Fe–Ni alloys
Linear arrangement of nano-scale magnetic particles formed in Cu–Fe–Ni alloys
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Cu-Fe-Ni 合金中纳米级磁性颗粒的线性排列
DOI：
10.1016/j.jallcom.2010.02.124
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发表时间：
2010
影响因子：
6.2
通讯作者：
D. Bae
中科院分区：
文献类型：
--
作者：
Sung Kang;M. Takeda;M. Takeguchi;D. Bae
用透射电子显微镜、电子色散X射线能谱、电子能量损失谱和场发射扫描电子显微镜研究了在878K等温退火条件下，Cu-Fe-Ni合金中形成的纳米磁性颗粒的结构演变。淬火样品经过短暂的退火热处理后，Cu-Fe-Ni发生相分解，并在富铜基质中随机形成纳米磁性颗粒。观察到了一个显著的特征，即两个或多个立方体形状的纳米粒子沿〈1，0，0〉方向线性排列，并且在沉淀的后期趋势更加明显。在退火后期，大量的〈1，0，0〉线性析出物链在三维方向上延伸。
The structural evolution of nano-scale magnetic particles formed in Cu–Fe–Ni alloys on isothermal annealing at 878K has been investigated by means of transmission electron microscopy (TEM), electron dispersive X-ray spectroscopy (EDS), electron energy-loss spectroscopy (EELS) and field-emission scanning electron microscopy (FE-SEM). Phase decomposition of Cu–Fe–Ni occurred after an as-quenched specimen received a short anneal, and nano-scale magnetic particles were formed randomly in the Cu-rich matrix. A striking feature that two or more nano-scale particles with a cubic shape were aligned linearly along 〈1,0,0〉 directions was observed, and the trend was more pronounced at later stages of the precipitation. Large numbers of 〈1,0,0〉 linear chains of precipitates extended in three dimensions in late stages of annealing.