Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session H71: Poster Session II (2:00pm - 5:00pm)
Tuesday, March 3, 2020
Room: Exhibit Hall C/D
Abstract: H71.00405 : Ferromagnetism in the hexagonal cage-like compounds Sm6(Mo,W)4Al43*
juan mejia marin
juan mejia marin
Ryan E. Baumbach, Lucas Nelson, Kaya Wei, FSU, NHML
We will report results for single crystals of Sm6T4Al43 (T=Mo,W) that were synthesized using a molten Al flux. Powder X-Ray diffraction measurements show that both compounds crystallize in the hexagonal Ho6Mo4Al43 structure with lattice constants near a = 10.97 Å and c = 17.67 Å, as reported previously . As for other compounds in this structure, the electrical transport data exhibit a weak temperature dependence due to significant disorder scattering, likely associated with atomic site interchange. The temperature dependent magnetic susceptibility and heat capacity further show that ferromagnetic ordering emerges from a weakly paramagnetic state near TC = 15 and 16 for the Mo and W variants, respectively. We will discuss these results in the context of other Sm-based intermetallics, where the f-state and the associated magnetism is strongly influenced by van Vleck physics.
 S. Niemann et al., Journal of Solid State Chemistry Vol 116 Issue 1, 0022-4596 (1995).
Ryan E. Baumbach, Lucas Nelson, Kaya Wei and Juan Jose Mejia Marin
The NHMFL is supported by the NSF under DMR-1644779 and the State of Florida. RB and LN acknowledge support from US-DOE, BES, under Award No. DE-SC0016568 EFRC-CAST.
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