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| 001 | 819905 | ||
| 005 | 20210129224412.0 | ||
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| 100 | 1 | _ | |a Brahimi, Samy |0 P:(DE-Juel1)171240 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Giant perpendicular magnetic anisotropy energies in CoPt thin films: impact of reduced dimensionality and imperfections |
| 260 | _ | _ | |a Bristol |c 2016 |b IOP Publ. |
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| 520 | _ | _ | |a The impact of reduced dimensionality on the magnetic properties of the tetragonal L10 CoPt alloy is investigated from ab initio considering several kinds of surface defects. By exploring the dependence of the magnetocrystalline anisotropy energy (MAE) on the thickness of CoPt thin films, we demonstrate the crucial role of the chemical nature of the surface. For instance, Pt-terminated thin films exhibit huge MAEs which can be 1000% larger than those of Co-terminated films. Besides the perfect thin films, we scrutinize the effect of defective surfaces such as stacking faults or anti-sites on the surface layers. Both types of defects reduce considerably the MAE with respect to the one obtained for Pt-terminated thin films. A detailed analysis of the electronic structure of the thin films is provided with a careful comparison to the CoPt bulk case. The behavior of the MAEs is then related to the location of the different virtual bound states utilizing second order perturbation theory. |
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| 773 | _ | _ | |a 10.1088/0953-8984/28/49/496002 |g Vol. 28, no. 49, p. 496002 - |0 PERI:(DE-600)1472968-4 |n 49 |p 496002 |t Journal of physics / Condensed matter |v 28 |y 2016 |x 1361-648X |
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