Mishra, Vidyanshu ; Oliynyk, Anton O. ; Subbarao, Udumula ; Sarma, Saurav Ch. ; Mumbaraddi, Dundappa ; Roy, Soumyabrata ; Peter, Sebastian C. (2018) Complex crystal chemistry of Yb6(CuGa)50 and Yb6(CuGa)51 grown at different synthetic conditions Crystal Growth & Design, 18 (10). pp. 6091-6099. ISSN 1528-7483
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Official URL: https://doi.org/10.1021/acs.cgd.8b00958
Related URL: http://dx.doi.org/10.1021/acs.cgd.8b00958
Abstract
Two new compounds in the Yb-Cu-Ga system were discovered. Yb6(CuGa)50 was obtained as single crystals grown from gallium metal flux, and Yb6(CuGa)51 was synthesized by high-frequency induction heating technique. Structure analysis reveals new structure type for Yb6(CuGa)50 (C2/m space group), while Yb6(CuGa)51 crystallizes in rhombohedral space group R3‾m adopting the Th2Zn17 structure type. Both structures could be derived from the simplest layered packing, through CaCu5-type structure, as a common parent. Physical properties of the Yb6(CuGa)51 sample obtained bulk quantity were explored. The magnetic susceptibility study of Yb6(CuGa)51 in the temperature range of 2-300 K suggests a valence fluctuation at lower temperatures. X-ray absorption near edge spectroscopy suggests that Yb exists in mixed-valent state in Yb6(CuGa)51. Electrical resistivity measurement reveals that Yb6(CuGa)51 is metallic in nature and shows Fermi-liquid behavior in the temperature range from 3.5 to 25 K.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 139075 |
| Deposited On: | 21 Aug 2025 05:36 |
| Last Modified: | 21 Aug 2025 05:36 |
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