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Magnetism of new semi-Heusler compounds FeVSn and CoVSn

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4 Author(s)
C. S. Lue ; Dept. of Phys., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan ; Y. Oner ; D. G. Naugle ; J. H. Ross

Magnetic properties of new intermetallics FeVSn and CoVSn are reported. Both materials belong to the group of semi-Heusler compounds, with lattice parameters of 0.593 and 0.598 nm respectively in a cubic MgAgAs structure. X-ray investigations indicate partial atomic ordering in both cases. Ferromagnetic order was observed in FeVSn with Tc =86 K. The saturation moment obtained by M versus H measurements at 4 K has a value of 0.45 Gig, indicating that FeVSn is a weak itinerant ferromagnet. CoVSn was found to be paramagnetic with no magnetic ordering down to 2 K. Room-temperature 51V NMR spectra were used as a local probe of the magnetic behavior of these materials. The results Indicate that V d orbitals play a strong role in the magnetism of FeVSn. Results for CoVSn are consistent with predicted semiconducting or semimetallic behavior for this material

Published in:

IEEE Transactions on Magnetics  (Volume:37 ,  Issue: 4 )