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Magnetic Anisotropy and Damping for Monolayer-Controlled Co | Ni Epitaxial Multilayer
- Source :
- Journal of the Physical Society of Japan. 86:074710
- Publication Year :
- 2017
- Publisher :
- Physical Society of Japan, 2017.
-
Abstract
- Structures and magnetic properties were systematically investigated for the monolayer (ML)-controlled Co | Ni multilayers with various Ni layer thicknesses, where the Co and Ni layers were epitaxially grown on a Al2O3 (\(11\bar{2}0\)) single crystal substrate or deposited on a thermally oxidized Si substrate. The epitaxial Co | Ni multilayers exhibited high uniaxial magnetic anisotropy energies (Ku) and low effective magnetic damping constants (αeff), resulting in the perpendicular magnetization with low damping even for the 1 ML-Ni | 1 ML-Co multilayer. By comparing the experimental results with the first principles calculation, we found that the Ni atoms largely contributed to the perpendicular anisotropy for the Co | Ni multilayers. We also discussed the possible mechanism dominating the magnitude of αeff for the Co | Ni multilayers based on the experiments and the calculations. The present results suggest that the epitaxial Co | Ni multilayer is a promising material to achieve high Ku and low magnetic...
- Subjects :
- Materials science
Condensed matter physics
General Physics and Astronomy
02 engineering and technology
021001 nanoscience & nanotechnology
Single crystal substrate
Epitaxy
01 natural sciences
Condensed Matter::Materials Science
Magnetic anisotropy
0103 physical sciences
Magnetic damping
Monolayer
Perpendicular anisotropy
010306 general physics
0210 nano-technology
Layer (electronics)
Bar (unit)
Subjects
Details
- ISSN :
- 13474073 and 00319015
- Volume :
- 86
- Database :
- OpenAIRE
- Journal :
- Journal of the Physical Society of Japan
- Accession number :
- edsair.doi...........2761d73ebffc915125aeaf30c7c7f4fd