The structure of B-type Sm2O3. A powder neutron diffraction study using enriched Sm-154
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Date
2011-09-01
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Elsevier Science BV
Abstract
The structure of Sm(2)O(3) in its B-type monoclinic (C2/m) form has been refined through Rietveld refinement of powder neutron diffraction data. In order to overcome the high absorption cross-section of naturally occurring Sm the Sm-154 was used. The refined structure shows the average coordination of each of the three crystallographically unique Sm sites to be comparable. An un-expected result of this work is the relatively large difference between the refined (8.62 (1) fm) and tabulated (9.30 fm) scattering lengths of Sm-154. Evidently small variations in the precise isotopic composition can significantly alter this value. © 2011, Elsevier Ltd.
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Keywords
Samarium, Neutron diffraction, Isotopes, Crystal lattices, Crystals, Crystallography
Citation
Kennedy, B. J., & Avdeev, M. (2011). The structure of B-type Sm2O3. A powder neutron diffraction study using enriched Sm-154. Solid State Sciences, 13(9), 1701-1703. doi:10.1016/j.solidstatesciences.2011.06.020