Structure and properties of rhombohedral CePd{SUB 3}Ga{sub 8} : a variant of the cubic parent compound with BaHg{sub 11} structure type.
- Materials Science Division
Single crystals of a new intermetallic gallide, R-CePd{sub 3}Ga{sub 8}, have been synthesized from excess molten gallium. Single-crystal X-ray diffraction reveals that R-CePd{sub 3}Ga{sub 8} crystallizes in the R-3m space group with a=b=c=8.4903(10) {angstrom} and {alpha}={beta}={gamma}=89.993(17). R-CePd{sub 3}Ga{sub 8} is a variant of the cubic BaHg{sub 11} structure type with three structural units: a Ce-centered polyhedron, a distorted cube of Pd{sub 2}Ga{sub 6} and a Pd-centered cuboctahedron. The distortions of these units are compared to a undistorted analogous units in intermetallic compounds with BaHg{sub 11} structure type. Field and temperature-dependent magnetization measurements on R-CePd{sub 3}Ga{sub 8} reveal a paramagnetic material with strong antiferromagnetic correlations and a magnetization consistent with Ce{sup 3+}. Electrical resistance measurements indicate Kondo behavior between localized Ce{sup 3+} magnetic moments.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); National Science Foundation (NSF); Research Corp. Coltrell College Science Award
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 1028613
- Report Number(s):
- ANL/MSD/JA-70653; JSSCBI; TRN: US201122%%771
- Journal Information:
- Journal of Solid State Chemistry, Vol. 184, Issue 12; ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- ENGLISH
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