Refine Intervention: Characterizing Disordered Yb₀.₅Co₃Ge₃
Single crystals of the ternary Yb0.5Co3Ge3 have been grown out of molten Sn flux and characterized by single crystal and synchrotron powder X-ray diffraction. Yb0.5Co3Ge3 adopts a hybrid YCo6Ge6/CoSn structure, crystallizing in the hexagonal space group P6/mmm with lattice parameters α ≈ 5.1 Å and c ≈ 3.9 Å. Although the compound does not magnetically order down to 2 K, Weiss temperatures of -21 K, -18.7 K, and -21 K for H//α, H//c, and the polycrystalline average, respectively, indicate antiferromagnetic interactions with μeff = 4.23 μB, slightly lower than the full Yb3+ moment of 4.54 μB. Field-dependent magnetization up to 7 T measured at 2, 5, and 10 K show a linear dependence along H//α. Magnetization at 2 K for H//c approaches saturation near 1 μB, lower than the full Yb3+ moment. Herein, we present the synthesis and characterization of Yb0.5Co3Ge3.
A. Weiland et al., "Refine Intervention: Characterizing Disordered Yb₀.₅Co₃Ge₃," Crystal Growth and Design, vol. 20, no. 10, pp. 6715 - 6721, American Chemical Society (ACS), Oct 2020.
The definitive version is available at https://doi.org/10.1021/acs.cgd.0c00865
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07 Oct 2020
National Science Foundation, Grant DMR-1700030