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New quarternary half metallic material CoFeMnSi

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Zitation

Dai, X., Liu, G., Fecher, G. H., Felser, C., Li, Y., & Liu, H. (2009). New quarternary half metallic material CoFeMnSi. Journal of Applied Physics, 105(7): 07E901, pp. 1-3. doi:10.1063/1.3062812.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0018-98C2-8
Zusammenfassung
A good field to develop new materials with half metallicity is the quaternary Heusler alloys. The preferred route is to combine the compounds that have been already grown in Heusler structure. As a typical example, the quaternary LiMgPdSb-type CoFeMnSi have been investigated in detail. For the quaternary LiMgPdSb-type compounds, three nonequivalent structures exist. From the calculated density of state (DOS) results, it can be seen that one superstructure shows half metallicity. The second superstructure has a pseudogap at the Fermi level. The third superstructure shows metallic behavior. Based on the analysis of the measured XRD pattern and magnetization curve, we can deduce that the CoFeMnSi compound is crystallized in the structure where half metallicity occurs. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3062812]