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arXiv · 1604.03146

Single crystal growth of CeTAl$_3$ (T = Cu, Ag, Au, Pd and Pt)

C. Franz·A. Senyshyn·A. Regnat·C. Duvinage·R. Schönmann·A. Bauer·Y. Prots·L. Akselrud·V. Hlukhyy·V. Baran·C. Pfleiderer
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Abstract

We report single crystal growth of the series of CeTAl$_3$ compounds with T = Cu, Ag, Au, Pd and Pt by means of optical float zoning. High crystalline quality was confirmed in a thorough characterization process. With the exception of CeAgAl$_3$, all compounds crystallize in the non-centrosymmetric tetragonal BaNiSn$_{3}$ structure (space group: I4mm, No. 107), whereas CeAgAl$_3$ adopts the related orthorhombic PbSbO$_2$Cl structure (Cmcm, No. 63). An attempt to grow CeNiAl$_3$ resulted in the composition CeNi$_2$Al$_5$. Low temperature resistivity measurements down to $\sim$0.1K did not reveal evidence suggestive of magnetic order in CePtAl$_3$ and CePdAl$_3$. In contrast, CeAuAl$_3$, CeCuAl$_3$ and CeAgAl$_3$ display signatures of magnetic transitions at 1.3K, 2.1K and 3.2K, respectively. This is consistent with previous reports of antiferromagnetic order in CeAuAl$_3$, and CeCuAl$_3$ as well as ferromagnetism in CeAgAl$_3$, respectively.

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C. Franz, A. Senyshyn, A. Regnat, C. Duvinage, R. Schönmann, A. Bauer, Y. Prots, L. Akselrud, V. Hlukhyy, V. Baran, C. Pfleiderer. 2016-04-11. Single crystal growth of CeTAl$_3$ (T = Cu, Ag, Au, Pd and Pt). https://doi.org/10.1016/j.jallcom.2016.07.071

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