Tunable damping in the Heusler compound Co2-xIrxMnSi
Koehler A, Wollmann L, Ebke D, Chadov S, Kaiser C, Diao Z, Zheng Y, Leng Q, Felser C (2016)
Publication Type: Journal article
Publication year: 2016
Journal
Book Volume: 93
Article Number: 094410
Journal Issue: 9
DOI: 10.1103/PhysRevB.93.094410
Abstract
Here we report on the realization of tuning the intrinsic damping in the half-metallic Heusler compound Co2MnSi by substituting Co by Ir. The work includes theoretical calculations and experimental measurements on bulk and thin films samples. Control of damping is to remove unwanted magnetization motion and suppress signal echoes through uncontrolled precession of the magnetization for future implementation of this material into, e.g., current perpendicular plane-giant-magnetoresistance sensors. Density functional calculations revealed stable magnetization and increasing damping parameter with Iridium concentration, whereas the half metallicity could be retained. The calculations are consistent with experimental results from bulk and thin film samples of this report and elucidate the linear dependence of the Gilbert damping parameter on the substituent concentration. This report again demonstrates the inherent tunability of Heusler compounds, which constitutes a pivotal feature of this material class.
Involved external institutions
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
Western Digital Corporation (WDC)
United States (USA) (US)
Germany (DE)
Western Digital Corporation (WDC)
United States (USA) (US)
How to cite
APA:
Koehler, A., Wollmann, L., Ebke, D., Chadov, S., Kaiser, C., Diao, Z.,... Felser, C. (2016). Tunable damping in the Heusler compound Co2-xIrxMnSi. Physical Review B, 93(9). https://doi.org/10.1103/PhysRevB.93.094410
MLA:
Koehler, Albrecht, et al. "Tunable damping in the Heusler compound Co2-xIrxMnSi." Physical Review B 93.9 (2016).
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