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  Tunable damping in the Heusler compound Co2-xIrxMnSi

Köhler, A., Wollmann, L., Ebke, D., Chadov, S., Kaiser, C., Diao, Z., et al. (2016). Tunable damping in the Heusler compound Co2-xIrxMnSi. Physical Review B, 93(9): 094410, pp. 1-8. doi:10.1103/PhysRevB.93.094410.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-307F-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-0073-D
Genre: Journal Article

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 Creators:
Köhler, Albrecht1, Author              
Wollmann, L.1, Author              
Ebke, Daniel2, Author              
Chadov, Stanislav3, Author              
Kaiser, Christian4, Author
Diao, Zhitao4, Author
Zheng, Yuankai4, Author
Leng, Qunwen4, Author
Felser, Claudia5, Author              
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2Daniel Ebke, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863430              
3Stanislav Chadov, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863440              
4External Organizations, ou_persistent22              
5Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 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.

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Language(s): eng - English
 Dates: 2016-03-092016-03-09
 Publication Status: Published in print
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 93 (9) Sequence Number: 094410 Start / End Page: 1 - 8 Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008