SmCo/Fe多层中的高最大能量产物:层次测序和厚度优化的微磁模拟
Taa Taaev1, Kamal Khizriev2, Evgeny Karashtin3
1Laboratory of Computational physics and physics of phase transitions, FSBIS Amirkhanov Institute of Physics of Dagestan Federal Research Centre of the Russian Academy of Sciences, 94, Yaragskii street, Makhachkala, Dagestan Republic, 367003, RUSSIAN FEDERATION.
概括
研究人员优化了用于高能产品磁体的磁性SmCo/Fe多层. 具有硬外层的结构实现了最高的最大能量产品 (BH) max,为先进的磁性材料提供了设计策略.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 纳米技术 纳米技术
背景情况:
- 多层SmCo/Fe是永久磁铁的前景.
- 优化层结构对于最大限度地提高磁性质量至关重要.
研究的目的:
- 研究SmCo/Fe多层,以获得最高的最大能量产品 (BH) max.
- 确定层次排列和边缘层对磁性能的影响.
主要方法:
- 使用MuMax3包进行了微磁模拟.
- 模拟的多层结构具有不同的层数 (n=2到17) 和边缘层配置.
- 分析了磁性特性,重点是 (BH) max.
主要成果:
- 对于具有硬SmCo外层结构的结构,最高的 (BH) max为85.6MGOe.
- 对于具有柔软Fe外层的结构,获得了略低的 (BH) max 85 MGOe.
- 改进与从域壁固定转向核化和增加和磁化有关.
结论:
- 具有硬外层的结构由于没有自由的软表面而表现出优越的性能.
- 该研究提供了高性能交换弹磁铁的设计策略,其硬磁相位含量减少.
- 优化的多层设计可以带来具有增强能源产品的先进磁性材料.
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