About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
Strain-dependent Magnetic Anisotropy in Heusler Alloys Induced by Orbital and Quadrupole Moments |
| Author(s) |
Amran Mahfudh Mahfudh Yatmeidhy, Yoshihiro Gohda |
| On-Site Speaker (Planned) |
Amran Mahfudh Mahfudh Yatmeidhy |
| Abstract Scope |
The control of magnetism by an electric field via the magnetoelectric effect of artificial multiferroic heterostructures has attracted broad scientific interest. Recently, the multiferroic heterostructures made of Co-based Heusler alloys grown on PMN-PT substrate produce high magnetoelectric coefficients of the order of 10-6 to 10-5 s/m. These high coefficients are associated with the significant modulation of strain-induced magnetic anisotropy in the Heusler alloys by an electric field. However, the microscopic mechanism of such strain-induced magnetic anisotropy in the Heusler alloys has not been fundamentally understood yet. In this study, we analyze the strain-induced magnetocrystalline anisotropy energy in the Co2FeSi, Co2MnSi, and Fe3Si Heusler alloys based on first-principles electron theory. Using the second-order perturbation analysis, we identify that the tuned magnetocrystalline anisotropy energy in the Co2FeSi and Co2MnSi is attributed to the modulation in the spin-flip term of Co 3d states, which is related to the quadrupole moment. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, Computational Materials Science & Engineering, Other |