Kristallstruktur von “Ce3Ga2” (Ce4,8Ga3,2)

Jatsenko, S. P.; Grin, Ju. N.; Sitschewitsch, O. M.; Sabirsianow, N. A.; Fedortschuk, A. A.

doi:10.1016/0022-5088(90)90383-U

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学術論文

Kristallstruktur von “Ce₃Ga₂” (Ce_4,8Ga_3,2)

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引用

Jatsenko, S. P., Grin, J. N., Sitschewitsch, O. M., Sabirsianow, N. A., & Fedortschuk, A. A. (1990). Kristallstruktur von “Ce₃Ga₂” (Ce_4,8Ga_3,2). Journal of the Less Common Metals, 160(2), 229-235. doi:10.1016/0022-5088(90)90383-U.

引用: https://hdl.handle.net/11858/00-001M-0000-0019-874E-6

要旨

Single crystals of the intermetallic compound Ce4,8Ga3,2 (“Ce3Ga2”) have been prepared by slow cooling of a molten stoichiometric liquid sample from 900 °C. The crystal structure has been studied by means of single-crystal methods (automatic four-circle diffractometer, MoKα, 389 reflections, R = 0.035): space group P4/ncc, Z = 4, a = 8.066(3), View the MathML source. The Ce4.8Ga3.2 structure is a substitutional variant of the Ba5Si3 structure type. The coordination numbers of atoms are 9 for gallium, 13 and 16 for cerium. The shortest interatomic distances: Ce-Ce, 3.396; Ce-Ga, 3.180; Ga-Ga, 2.670 Å. The relationships between the Ce4.8Ga3.2 structure and Cr5B3, Ba5Si3, U3Si2, Mo2FeB2, Gd3Al2, Zr3Al2 and Al2Cu structure types are discussed.