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Crystal Structure and Magnetic Behavior of the Uranium Monogermanide UGe

✍ Scribed by P. Boulet; A. Daoudi; M. Potel; H. Noël

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
247 KB
Volume
129
Category
Article
ISSN
0022-4596

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✦ Synopsis

The crystallographic structure of the uranium monogermanide UGe has been determined from single crystal X-ray diffraction data. UGe crystallizes with the orthorhombic ThIn type (Pbcm), a ‫؍‬ 9.827(2) A s , b ‫؍‬ 8.932(7) A s , c ‫؍‬ 5.841(2) A s , Z ‫؍‬ 12. Anisotropic refinements gave R ‫؍‬ 0.044 and R ‫؍‬ 0.048 for 986 reflections and 37 variables. Uranium and germanium atoms each occupy three crystallographic positions. The uranium U(3) form endless metallic chains running along the c axis, with a U-U interatomic distance of 2.92 A s . Magnetic measurements on an annealed polycrystalline powder indicate a Curie-Weiss-type behavior down to 2 K and an average effective magnetic moment of 2.47 B /U.

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