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Slater-Pauling rule and Curie temperature of Co2-based Heusler compounds

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Citation

Fecher, G. H., Kandpal, H. C., Wurmehl, S., Felser, C., & Schönhense, G. (2006). Slater-Pauling rule and Curie temperature of Co2-based Heusler compounds. Journal of Applied Physics, 99(8): 08J106, pp. 1-4. doi:10.1063/1.2167629.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0018-66FE-8
Abstract
A concept is presented serving to guide in the search for materials with high spin polarization. It is shown that the magnetic moment of half-metallic ferromagnets can be calculated from the generalized Slater-Pauling rule. Furthermore, it was found empirically that the Curie temperature of Co-2-based Heusler compounds can be estimated from a seemingly linear dependence on the magnetic moment. As a successful application of these simple rules, it was found that Co2FeSi is, actually, the half-metallic ferromagnet exhibiting the highest magnetic moment and the highest Curie temperature measured for a Heusler compound.