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arXiv · 0906.4458

Detection of sub-lattice magnetism in sigma-phase Fe-V compounds by zero-field NMR

S. M. Dubiel·J. R. Tozoni·J. Cieslak·D. C. Braz·E. L. G. Vidoto·T. J. Bonagamba
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Abstract

The first successful measurements of a sub-lattice magnetism with 51V NMR techniques in the sigma-phase Fe(100-x)Vx alloys with x = 34.4, 39.9 and 47.9 are reported. Vanadium atoms present on all five crystallographic sites are magnetic. Their magnetic properties are characteristic of a given site, which strongly depend on the composition. The strongest magnetism exhibit sites A and the weakest one sites D. The estimated average magnetic moment per V atom decreases from 0.36 muB for x = 34.4 to 0.20 muB for x = 47.9. The magnetism revealed at V atoms is linearly correlated with the magnetic moment of Fe atoms, which implies that the former is induced by the latter.

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S. M. Dubiel, J. R. Tozoni, J. Cieslak, D. C. Braz, E. L. G. Vidoto, T. J. Bonagamba. 2009-06-24. Detection of sub-lattice magnetism in sigma-phase Fe-V compounds by zero-field NMR. https://doi.org/10.1103/physrevb.81.184407

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