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|Title:||Synthesis and Rietveld Structure Refinement of Americium Pyrochlore Am2Zr2O7|
|Authors:||BELIN R. C.; VALENZA P. J.; RAISON PHILIPPE; TILLARD M.|
|Citation:||JOURNAL OF ALLOYS AND COMPOUNDS vol. 448 p. 321-324|
|Publisher:||ELSEVIER SCIENCE SA|
|Type:||Articles in periodicals and books|
|Abstract:||The polycrystalline americium pyrochloreAm2Zr2O7 was recently synthesized from 241AmO2 and ZrO2 powders and its structurewas investigated by X-ray powder pattern fitting. A Rietveld analysis was performed using the computer program JANA 2000. Am2Zr2O7 crystallizes in the space group Fd-3m with a = 10.66849(4) A° . For the less symmetrical of the two independent oxygen atoms, the unconstrained parameter x, which is characteristic of the pyrochlore structure, was found to be 0.339.|
|JRC Directorate:||Nuclear Safety and Security|
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