Hyperfine magnetic field on iron atoms and Co–Fe disordering in Co2FeSi
Vadim KsenofontovJohannes Gutenberg University 1 Institute of Inorganic and Analytical Chemistry, , Mainz 55099, GermanyM. WójcikPolish Academy of Sciences 2 Institute of Physics, , Al. Lotnikow 32/46, Warszawa 02-668, PolandS. WurmehlLeibniz-Institut für Festkörper- und Werkstoffforschung Dresden IFW 3 , Helmholtzstraße 20, Dresden 01069, GermanyHorst SchneiderJohannes Gutenberg University 4 Institute of Physics, , Mainz 55099, GermanyBenjamin BalkeJohannes Gutenberg University 1 Institute of Inorganic and Analytical Chemistry, , Mainz 55099, GermanyG. JakobJohannes Gutenberg University 4 Institute of Physics, , Mainz 55099, GermanyClaudia FelserJohannes Gutenberg University 1 Institute of Inorganic and Analytical Chemistry, , Mainz 55099, Germany
2010en
ABI
Аннотация
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 F57e Mössbauer spectroscopy and C59o 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.
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