期刊
PHYSICAL REVIEW B
卷 92, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.92.014423
关键词
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资金
- US Department of Energy, Energy Efficiency and Renewable Energy, Vehicles Technology Office, Advanced Power Electronics and Electric Motors program [DE-AC02-07CH11358]
- Engineering and Physical Sciences Research Council [EP/M011631/1] Funding Source: researchfish
- EPSRC [EP/M011631/1] Funding Source: UKRI
We use an analytical model to describe the magnetocrystalline anisotropy energy (MAE) in solids as a function of band filling. The MAE is evaluated in second-order perturbation theory, which makes it possible to decompose the MAE into a sum of transitions between occupied and unoccupied pairs. The model enables us to characterize the MAE as a sum of contributions from different, often competing terms. The nitridometalates Li-2[(Li1-xTx)N], with T = Mn, Fe, Co, Ni, provide a system where the model is very effective because atomiclike orbital characters are preserved and the decomposition is fairly clean. Model results are also compared against MAE evaluated directly from first-principles calculations for this system. Good qualitative agreement is found.
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