- 著者
-
三宅 隆
原嶋 庸介
深澤 太郎
赤井 久純
- 出版者
- 一般社団法人 粉体粉末冶金協会
- 雑誌
- 粉体および粉末冶金 (ISSN:05328799)
- 巻号頁・発行日
- vol.69, no.Supplement, pp.S99-S108, 2022-01-30 (Released:2022-01-30)
- 参考文献数
- 103
First-principles calculation based on density functional theory is a powerful tool for understanding and designing magnetic materials. It enables us to quantitatively describe magnetic properties and structural stability, although further methodological developments for the treatment of strongly-correlated 4f electrons and finite-temperature magnetism are needed. Here, we review recent developments of computational schemes for rare-earth magnet compounds, and summarize our theoretical studies on Nd2Fe14B and RFe12-type compounds. Effects of chemical substitution and interstitial dopants are clarified. We also discuss how data-driven approaches are used for studying multinary systems. Chemical composition can be optimized with fewer trials by the Bayesian optimization. We also present a data-assimilation method for predicting finite-temperature magnetization in wide composition space by integrating computational and experimental data.