Hyperfine magnetic field on iron atoms and Co-Fe disordering in Co2FeSi

Ksenofontov, Vadim; Wójcik, Marek; Wurmehl, Sabine; Schneider, Horst; Balke, Benjamin; Jakob, Gerhard; Felser, Claudia

doi:10.1063/1.3352572

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Hyperfine magnetic field on iron atoms and Co-Fe disordering in Co₂FeSi

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Ksenofontov, V., Wójcik, M., Wurmehl, S., Schneider, H., Balke, B., Jakob, G., & Felser, C. (2010). Hyperfine magnetic field on iron atoms and Co-Fe disordering in Co₂FeSi. Journal of Applied Physics, 107(9):, pp. 1-3. doi:10.1063/1.3352572.

引用: https://hdl.handle.net/11858/00-001M-0000-0018-A47B-B

要旨

The Heusler compound Co2FeSi is a prospective half-metallic material for spintronic applications. Defects and antisite disordering play a crucial role among the factors reducing spin polarization in such materials. To clarify effects of possible off-stoichiometry, a continuous series of model solid solutions Co3-xFexSi (0.6 <= x <= 1.4) was investigated by Fe-57 Mossbauer spectroscopy and Co-59 nuclear magnetic resonance. It has been shown that the hyperfine magnetic fields on Fe can be used to monitor Co-Fe disordering in Co2FeSi-based bulk samples and thin films. (C) 2010 American Institute of Physics. [doi:10.1063/1.3352572]