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Thermal expansion behavior of Ce2Zr2O7 up to 898 K in conjunction with structural analyses by neutron diffraction |
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| Authors: | Philippe E Raison Claudiu C Pavel Regis Jardin Emmanuelle Suard Richard G Haire Karin Popa |
| Institution: | (1) European Commission, Joint Research Centre, Institute for Transuranium Elements, P.O. Box 2340, 76125 Karlsruhe, Germany;(2) Department of Chemistry, Al.I. Cuza University, 11-Carol I Blvd., Iasi, 700506, Romania;(3) Institute Laue Langevin, Avenue des Martyrs, BP 156, 38042 Grenoble Cedex 9, France;(4) Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6375, USA |
| Abstract: | The thermal expansion of cubic pyrochlore Ce2Zr2O7 has been measured from room temperature to 898 K on polycrystalline material in conjunction with structural analyses using neutron diffraction. This compound has a thermal expansion coefficient in line with the other comparable lanthanoide pyrochlore oxides. The coefficient can be expressed as α(T) = 8.418 × 10−6 + 0.9861 × 10−9 × T. The structural refinements performed for each measured temperature showed a comparable linear evolution of the Ce–O/Zr–O distances (within 0.57%). |
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