4.6 Article

Calculation of Three-dimensional Energy Product for Isotropic Nd2Fe14B Magnet

期刊

APPLIED SCIENCES-BASEL
卷 12, 期 15, 页码 -

出版社

MDPI
DOI: 10.3390/app12157887

关键词

permanent magnet; energy product; micromagnetic simulation; multidomain reversal

资金

  1. Future Materials Discovery Program through the National Research Foundation of Korea (NRF) - Ministry of Science and ICT [2016M3D1A1027835]
  2. Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Ministry of Trade, Industry and Energy (MOTIE) of Korea [20192010106850]

向作者/读者索取更多资源

This study investigated a model system using micromagnetic simulation and compared different methods of calculating energy products, revealing discrepancies in the calculation process and analyzing the magnet in the model system comprehensively.
A conventional energy product calculated by the product of the B-field and the H-field is not sufficient for representing the performance of a magnet because it considers the homogeneous and only the uniaxial magnetic properties of the magnet. The conventional energy product has been compared with another energy product obtained by integrating the scalar product of the B-field and the H-field of each cell composed of the three-dimensional components. We investigated a model system by micromagnetic simulation using finite differential method (FDM) and calculated the full hysteresis of the magnet. The model system of a Nd2Fe14B magnet composed of grains with a diameter of about 100 nm was assumed. In the case of the isotropic multi-grain magnet, the energy product calculated by the integration method was 28% larger than the energy product obtained by the conventional way, although a discrepancy between the distribution of the magnetizations and the demagnetizing fields at the reversal process resulted in the decrease of the energy product.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据