About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Magnetic Materials for Energy and Power Conversion Applications
|
Presentation Title |
Electronic Structure of Nano-crystalline and Amorphous Soft Magnetic Materials: A Computational Methodology |
Author(s) |
Minyeong Choi, Yang-Ki Hong, Hoyun Won, Woncheol Lee, Seok Bae, Dong-Hyeok Choi, Seong-Gon Kim |
On-Site Speaker (Planned) |
Minyeong Choi |
Abstract Scope |
Wide bandgap semiconductor devices are now available for advanced power electronics and motor controller and operational even at high-temperature, -switching speed, and -rotation. Accordingly, high magnetization soft magnetic materials are ubiquitous to achieve a high power density of transformer and inductor, thereby, high-efficiency electrical machines. The soft magnetic materials need the saturation magnetization (Ms) higher than 1.9 T and saturation magnetostriction (λ) of about 10-7. Both nanocrystalline and amorphous soft magnetic materials potentially meet such high Ms and low λ if the discovery of new chemical composition and materials processing continues. Therefore, we have calculated electronic structures of nanocrystalline Fe-Cu-Si-B and amorphous Fe-P-C soft magnetic materials using first-principles calculations based on the density functional theory (DFT) to obtain magnetic moments. In this paper, we will introduce the first-principles calculation methodology and report the calculated magnetic moments.
This work was supported in part by the NSF IIP under grant No. 1650564. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |