About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Magnetic Materials for Energy and Power Conversion Applications
|
Presentation Title |
Optimizing the Magnetic Performance of Tetragonal ReFe12-xMx Phases using ab initio Computational Methods |
Author(s) |
Heike C. Herper, Olga Yu. Vekilova |
On-Site Speaker (Planned) |
Heike C. Herper |
Abstract Scope |
Predicting materials with tailored properties from computational simulations has become an inherent tool of materials design. To identify new rare-earth lean magnets the tetragonal 1:12 phase (35% less RE than commercial Nd-Fe-B magnets) was systematically investigated.
Using ab initio methods, the change in the magnetic performance due to variation of the concentration of the RE and the phase stabilizer M were calculated to identify a “magnetic performance map”. The focus was on Sm- and Nd-based ReFe12-xMx. phases with M = Ti, V. For Nd1-xYxFe11-yTiy a large stable phase space was found with uniaxial anisotropy in the Ti-rich side. Including N to the picture the uniaxial anisotropy range is shifted to lower Ti concentrations especially for larger Y concentrations.
With SmFe11V system a new phase was found leading to an increase of the magnetization by 17% compared to the commonly used concentrations of V [JALCOM 786, 969 (2019)]. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |