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"Electronic and Magnetic Properties of the Inverse Magnetoresistant Fe1-xCoxSi Alloys"
J. Guevara, V.L. Vildosola, J. Milano and A.M. Llois
Proc. of the "5th Latin American Workshop on Magnetism, Magnetic Materials and their Applications" (LAW3M '01), San Carlos de Bariloche, Río Negro, Argentina, September 3-7, 2001. Ed. C.A. Ramos, B. Alascio, M.T. Causa, M. Tovar.
Physica B Condens. Matter. 320(1-4) (2002) 388-391
The alloy Fe1-xCoxSi shows a remarkable behavior, while the two extremes are both non-magnetic almost all the intermediates show magnetic order, specially in the Fe-rich region. We present here ab-initio calculations within the LSDA approximation for these compounds and show that they behave as half metals for x ≤ 0.25. This explains the linear dependence on x of the magnetic moment in this region. We also explain the magnetic behaviour for larger concentrations.
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