Kyrk Trent M, Scheifers Jan P, Thanabalasingam Kulatheepan, McCandless Gregory T, Young David P, Chan Julia Y
Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, Texas 75080, United States.
Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803-4001, United States.
Inorg Chem. 2021 Oct 18;60(20):15343-15350. doi: 10.1021/acs.inorgchem.1c01978. Epub 2021 Oct 5.
The BaAl prototype structure and its derivatives have been identified to host several topological quantum materials and noncentrosymmetric superconductors. Single crystals up to ∼3 mm × 3 mm × 5 mm of LnCoGe (Ln = Pr, Nd, and Sm) are obtained via flux growth utilizing Sn as metallic flux. The crystal structure is isostructural to the LuCoSi structure type in the crystallographic space group 2/. The temperature-dependent magnetization indicates magnetic ordering at 30 K for all three compounds. PrCoGe and NdCoGe exhibit complex magnetic behavior with spin reorientations before ordering antiferromagnetically around 6 K, whereas SmCoGe shows a clear antiferromagnetic behavior at 26 K. The structures and properties of LnCoGe (Ln = Pr, Nd, and Sm) are compared to those of the ThCrSi and BaNiSn structure types. Herein, we present the optimized crystal growth, structure, and physical properties of LnCoGe (Ln = Pr, Nd, and Sm).
