Strain-Induced Electronic Structure and Magnetocrystalline Anisotropy Energy in MnFe2O4 From First-Principles Calculations

2021 ◽  
Vol 57 (3) ◽  
pp. 1-5
Author(s):  
Riyajul Islam ◽  
Junaid Jami ◽  
J. P. Borah
Keyword(s):  
Electronic Structure ◽  
First Principles ◽  
Magnetocrystalline Anisotropy ◽  
Anisotropy Energy ◽  
First Principles Calculations ◽  
Magnetocrystalline Anisotropy Energy

scholarly journals Dependence of Atomic Thickness on Interfacial Conditions and Magnetocrystalline Anisotropy in SmCo5/Sm2Co17 Multilayer

Materials ◽  
2018 ◽  
Vol 12 (1) ◽  
pp. 56
Author(s):  
Soyoung Jekal
Keyword(s):  
Coupling Strength ◽  
First Principles ◽  
Exchange Coupling ◽  
Magnetocrystalline Anisotropy ◽  
Model System ◽  
Anisotropy Energy ◽  
First Principles Calculations ◽  
Magnetic Structures ◽  
Interfacial Conditions ◽  
Magnetocrystalline Anisotropy Energy

We have performed first-principles calculations to study the interfacial exchange coupling and magnetocrystalline anisotropy energy in a SmCo 5 /Sm 2 Co 17 multilayer model system. The phase of SmCo 5 and Sm 2 Co 17 stacking along (0001) direction are structurally well matched. The atomic structure, including the alignment and the separation between layers, were firstly optimized. Then the non-collinear magnetic structures were calculated to explore the exchange coupling across the interface and the variation of magnetocrystalline anisotropy energy. We found that the inter-phase exchange coupling strength, rotating behavior and magnetocrystalline anisotropy strongly depend on the atomic thickness of the SmCo 5 and Sm 2 Co 17 phase.

Enhancing perpendicular magnetocrystalline anisotropy in Fe ultrathin films by non-noble transition-metal substrate

2020 ◽  
Vol 31 (09) ◽  
pp. 2050134
Author(s):  
Shanhu Zhou ◽  
Jun Hu
Keyword(s):  
Magnetic Properties ◽  
Ultrathin Films ◽  
First Principles ◽  
Proximity Effect ◽  
Magnetocrystalline Anisotropy ◽  
Atomic Layer ◽  
Metal Substrate ◽  
First Principles Calculations ◽  
Magnetic Proximity Effect ◽  
Magnetocrystalline Anisotropy Energy

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.

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