Weak ferromagnetism in Fe1-xCoxSb2 is studied by magnetization and Mössbauer measurements. A small spontaneous magnetic moment of the order of ~ 10-3µB appears along the b axis for 0.2 ≤ x ≤ 0.4. Based on a structural analysis, we argue against extrinsic sources of weak ferromagnetism. We discuss our results in the framework of the nearly magnetic electronic structure of the parent compound FeSb2.
R. Hu et al., "Weak Ferromagnetism in Fe1-xCoxSb2," Physical Review B - Condensed Matter and Materials Physics, vol. 76, no. 22, American Physical Society (APS), Dec 2007.
The definitive version is available at http://dx.doi.org/10.1103/PhysRevB.76.224422
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