Effect of high magnetic field on liquid-phase growth rate of FePt nanoparticles

被引：0
|
作者：
Wu C. [1 ,2 ]
Ju Y.-P. [1 ]
Jiang Y.-N. [1 ]
Dong S.-Z. [1 ]
Ren X. [1 ]
Pei W.-L. [3 ]
Wang K. [2 ]
Wang Q. [2 ]
机构：
[1] School of Materials Science and Engineering, Liaoning Technical University, Fuxin
[2] Key Laboratory of Electromagnetic Processing of Materials, Northeastern University, Shenyang
[3] Key Laboratory of Anisotropy and Texture of Materials, Northeastern University, Shenyang
来源：
Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2022年 / 32卷 / 03期
基金：
中国国家自然科学基金;
关键词：
FePt nanoparticle; Growth rate; High magnetic field; Morphology transition;
D O I：
10.11817/j.ysxb.1004.0609.2021-42299
中图分类号：
学科分类号：
摘要：
A quantitative metallographic method has been employed to analyze the effect of the 6 T high magnetic field on growth behavior of FePt crystals along < 100> and < 111> directions. The results indicate that the liquid-phase growth of FePt crystals includes two stages, rapid growth and slow growth along the < 100> and < 111> directions. The high magnetic field reduces the growth rates and distances along the < 100> and < 111> directions by reducing the concentration of atoms, inhibiting the diffusion of atoms, and inhibiting the adsorption of surfactants. Thus, the crystal grains are refined. The high magnetic field reduces the decreasing degree of growth rate along the < 100> direction by enhancing the magnetocrystalline anisotropy, affecting the adsorption of -NH2 functional groups on the (100) face, and promoting the deposition of Fe atoms on the (100) face, leading to the increase of time required for FePt crystals shape transition from truncated-cubes to cubes and concave-cubes during the growth processes. Otherwise, when using the same growth time, the crystal shapes transit from cube to truncated-cube, from concave-cube to truncated-cube and cube under the high magnetic field. © 2022, China Science Publishing & Media Ltd. All right reserved.
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页码：836 / 844
页数：8
相关论文
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