Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8152502 | Journal of Magnetism and Magnetic Materials | 2018 | 5 Pages |
Abstract
We investigated the magnetocrystalline anisotropy (MCA) of MnPt(0â¯0â¯1) film and MnPt/MgO(0â¯0â¯1) using ab initio electronic structure calculations. We found that the magnetic ground state of the MnPt film strongly depends on thickness (n). In bulk and in film with nâ¯â¥â¯7 monolayers; AFM-II is the magnetic ground state. However, as the film thickness reduces, the magnetic ground state shifts from AFM-II to AFM-III. We employ layer-by-layer Heisenberg model to explain thickness dependent ground state transition. AFM-III state in the Mn-terminated film shows large perpendicular MCA(PMCA), which further enhances on a MgO(0â¯0â¯1) substrate. We conclude that the interface plays a key role for the enhancement of PMCA on the substrate.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Qurat-ul-ain Qurat-ul-ain, Do Duc Cuong, Dorj Odkhuu, S.H. Rhim, S.C. Hong,