1. Enhancing perpendicular magnetocrystalline anisotropy in Fe ultrathin films by non-noble transition-metal substrate
- Author
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Shanhu Zhou and Jun Hu
- Subjects
Materials science ,Condensed matter physics ,General Physics and Astronomy ,Substrate (chemistry) ,Statistical and Nonlinear Physics ,02 engineering and technology ,021001 nanoscience & nanotechnology ,Magnetocrystalline anisotropy ,01 natural sciences ,Computer Science Applications ,Computational Theory and Mathematics ,Transition metal ,0103 physical sciences ,Perpendicular ,010306 general physics ,0210 nano-technology ,Mathematical Physics - Abstract
Based on first-principles calculations, we studied the magnetic properties of ultrathin Fe film on a nonmagnetic substrate Ta(001). We found that the perpendicular magnetocrystalline anisotropy (PMA) of Fe/Ta(001) system with only one or two Fe atomic layer(s) can be enhanced significantly, and the corresponding magnetocrystalline anisotropy energy is enlarged tos about 3 times of that in pure ultrathin Fe film. Analysis of electronic properties demonstrates that the magnetic proximity effect at the Fe/Ta interface plays an important role in the enhancement of the PMA. Alternative arrangement of Ta and Fe layers with more Fe/Ta interfaces may further strengthen the PMA.
- Published
- 2020
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