Abstract
Measurements of the magnetization, specific heat, and electrical resistivity on CeTAl 3 (T=Au, Cu, Pt) and CeAuGa 3 polycrystals are reported. For all alloys, magnetic order is found. In CeTAl 3 the antiferromagnetic ordering temperature TN increases from 1.5 K (T=Au) to 2.9 K (T=Cu) while spin-glass order is found at 0.8 K for T=Pt. This tendency resembles the nonmonotonic dependence of the ordering temperature on the hybridization between Ce moments and ligand atoms in terms of the Doniach picture. CeAuGa 3 (TN=2.4 K) behaves similarly to CeAuAl 3 , thus underscoring the dominant role of transition metal ligands in ternary Ce compounds.
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Mock, S., Pfleiderer, C. & Löhneysen, H.v. Low-Temperature Properties of CeTAl3 (T=Au, Cu, Pt) and CeAuGa3 . Journal of Low Temperature Physics 115, 1–14 (1999). https://doi.org/10.1023/A:1021838628126
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DOI: https://doi.org/10.1023/A:1021838628126