The effect of particle size on coercivity and crystallinity of SmCo5
The effect of particle size on coercivity and crystallinity of SmCo5
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DOI：
10.1063/1.3607958
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发表时间：
2011-07-04
影响因子：
4
通讯作者：
Barnes, P. N.
中科院分区：
文献类型：
--
作者：
Chen, C. H.;Knutson, S. J.;Barnes, P. N.
观察到Sm-Co合金的结晶度H-ci达到峰值的颗粒尺寸的转折点。使用从20 nm到5 mm的宽尺寸范围，SmCo 5纳米片的薄片厚度的转折点在100-180 nm的范围内确定，其中H-ci峰在类似于20 kOe处。在远低于转折点的颗粒尺寸下的较低结晶度可能与控制结晶度的更详细的纳米级形态有关。还讨论了高能球磨粉末的粒度对结晶度的影响。(C)2011年美国物理学会。[doi：10.1063/1.3607958]
It is observed a turning point in the particle size for which the coercivity H-ci of a Sm-Co alloy reaches a peak. Using a broad size range from 20 nm to 5 mm, the turning point of the flake thickness for SmCo5 nanoflakes is determined in the range of 100-180 nm with H-ci peak at similar to 20 kOe. A lower coercivity at a particle size well below the turning point is likely related to a more detailed nanoscale morphology that controls coercivity. The effect of particle size on crystallinity for high energy milled powder is also discussed with four observations. (C) 2011 American Institute of Physics. [doi:10.1063/1.3607958]