Shape Magnetic Anisotropy From Spin Density in Nanoscale Slab Systems
| Autor: | Masao Obata, Nurul Ikhsan, Tatsuki Oda, Indra Pardede, Daiki Yoshikawa, Tomosato Kanagawa |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Condensed matter physics Physics::Optics Edge (geometry) 01 natural sciences Electronic Optical and Magnetic Materials Magnetic anisotropy Ferromagnetism 0103 physical sciences Quadrupole Slab Perpendicular Antiferromagnetism Condensed Matter::Strongly Correlated Electrons Electrical and Electronic Engineering Magnetic dipole |
| Zdroj: | IEEE Transactions on Magnetics. 55:1-4 |
| ISSN: | 1941-0069 0018-9464 |
| Popis: | We developed a computational method for estimating magnetic dipole energy of slab materials using spin density obtained through a density functional approach. The new method can accurately estimate magnetic anisotropy energy (MAE) for slabs from magnetic dipole interaction called shape MAE (SMAE). We investigated ferromagnetic and antiferromagnetic slabs and found that a quadrupole component of atomic spin density suppresses SMAE in ferromagnetic slabs with Fe/MgO interface. In antiferromagnetic MnPt slabs, which have a perpendicular favor originating from the crystalline magnetic dipole interaction, a surface effect at the Mn edge appears as an enhancement of SMAE. |
| Databáze: | OpenAIRE |
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