氮化作用对Sm2Fe17N3合金磁性能影响的微磁模拟

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2022-03-11 DOI:10.1109/LMAG.2022.3158542

Zhi Yang;Yuanyuan Chen;Yuqing Li;Dongtao Zhang;Weiqiang Liu;Qingmei Lu;Qiong Wu;Hongguo Zhang;Ming Yue

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引用次数: 2

摘要

氮氧化是Sm2Fe17N3形成过程中不可或缺的一个过程，对其磁性能有重要影响。本工作通过微磁模拟研究了氮化对Sm2Fe17N3磁性能的影响。未氮化Sm2Fe17核尺寸小于16nm的不完全氮化Sm2Fe17N3的正常矫顽力、剩磁和最大能积接近其在完全氮化Sm2Fe17N3中的值的99%。因此，小的未氮化Sm2Fe17芯不会影响Sm2Fe17N3永磁体的有效利用。对不同尺寸未氮化Sm2Fe17核的未完全氮化Sm2Fe17N3的磁化反转模式进行了评估，为深入了解Sm2Fe17N3颗粒的退磁过程提供了基础。这项工作可能有助于优化氮化条件，以提高Sm2Fe17N3永磁体的磁性能。

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Micromagnetic Simulation of Nitrogenation Effect on the Magnetic Properties of Sm2Fe17N3 Alloy

Nitrogenation is an indispensable process for the formation of Sm ₂ Fe ₁₇ N ₃ and has a major influence on its magnetic properties. In this work, the effect of nitrogenation on the magnetic properties of Sm ₂ Fe ₁₇ N ₃ was investigated by micromagnetic simulation. The normal coercivity, remanence, and the maximum energy product of incompletely nitrided Sm ₂ Fe ₁₇ N ₃ with a nonnitrided Sm ₂ Fe ₁₇ core size less than 16 nm approach nearly 99% of their values in fully nitrided Sm ₂ Fe ₁₇ N ₃ . Thus, a small nonnitrided Sm ₂ Fe ₁₇ core does not affect the effective utilization of Sm ₂ Fe ₁₇ N ₃ permanent magnets. The magnetization reversal mode of incompletely nitrided Sm ₂ Fe ₁₇ N ₃ with different sizes of nonnitrided Sm ₂ Fe ₁₇ cores was evaluated, providing an in-depth fundamental understanding of the demagnetization processes in Sm ₂ Fe ₁₇ N ₃ particles. This work could be useful for optimizing nitrogenation conditions to improve the magnetic properties of Sm ₂ Fe ₁₇ N ₃ permanent magnets.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.

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