- Cited by 26
Raison, P.E. and Haire, R.G. 2001. Zirconia-based materials for transmutation of americium and curium: cubic stabilized zirconia and zirconium oxide pyrochlores. Progress in Nuclear Energy, Vol. 38, Issue. 3-4, p. 251.
Bogdanov, Roman V. Zaytsev, Yuri M. and Sergeev, andrey S. 2002. The Use of Cerium Valence State for Evaluation of Accessory Minerals Durability to Radiation Damage. MRS Proceedings, Vol. 713, Issue. ,
Bogdanov, Roman V. Batrakov, Yuri F. Puchkova, Elena V. Sergeev, Andrey S. and Burakov, Boris E. 2002. Study of Natural Minerals of U-Ryrochlore-Type Structure as Analogues of Plutonium Ceramic Waste-form. MRS Proceedings, Vol. 713, Issue. ,
Lian, J. Wang, L. M. Chen, J. Ewing, R. C. and Kutty, K. V. G. 2002. Heavy Ion Irradiation of Zirconate Pyrochlores. MRS Proceedings, Vol. 713, Issue. ,
Kirjanova, O. I. Stefanovsky, S. V. and Yudintsev, S. V. 2002. Effect of temperature on formation of murataite and murataite-pyrochlore ceramics. MRS Proceedings, Vol. 757, Issue. ,
Lutique, S. Konings, R.J.M. Rondinella, V.V. Somers, J. and Wiss, T. 2003. The thermal conductivity of Nd2Zr2O7 pyrochlore and the thermal behaviour of pyrochlore-based inert matrix fuel. Journal of Alloys and Compounds, Vol. 352, Issue. 1-2, p. 1.
Ewing, R. C. Lian, J. and Wang, L. M. 2003. Ion Beam-Induced Amorphization of the Pyrochlore Structure-Type: A Review. MRS Proceedings, Vol. 792, Issue. ,
Raison, P.E. and Haire, R.G. 2003. Structural investigation of the pseudo-ternary system AmO2–Cm2O3–ZrO2 as potential materials for transmutation. Journal of Nuclear Materials, Vol. 320, Issue. 1-2, p. 31.
Glagovsky, E. M. Kouprine, A. V. Pelevine, L. P. Yudintsev, S. V. Velichkin, V. I. Konovalov, E. E. and Myasoedov, B. F. 2003. Study of matrices synthesised by a self-propagating high-temperature synthesis. Czechoslovak Journal of Physics, Vol. 53, Issue. S1, p. A657.
Lian, J. Wang, L.M. Haire, R.G. Helean, K.B. and Ewing, R.C. 2004. Ion beam irradiation in La2Zr2O7–Ce2Zr2O7 pyrochlore. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 218, Issue. , p. 236.
Ewing, Rodney C. Weber, William J. and Lian, Jie 2004. Nuclear waste disposal—pyrochlore (A2B2O7): Nuclear waste form for the immobilization of plutonium and “minor” actinides. Journal of Applied Physics, Vol. 95, Issue. 11, p. 5949.
Otobe, H. Nakamura, A. Yamashita, T. and Minato, K. 2005. Oxygen potential and defect structure of oxygen-excess pyrochlore Ce2Zr2O7+x. Journal of Physics and Chemistry of Solids, Vol. 66, Issue. 2-4, p. 329.
Ewing, Rodney C. 2005. Plutonium and “minor” actinides: safe sequestration. Earth and Planetary Science Letters, Vol. 229, Issue. 3-4, p. 165.
Chae, S. C. Jang, Y. N. Bae, I. K. Ryu, K. W. Yudintseva, T. S. and Yudintsev, S. V. 2007. Synthesis and phase relations in the system with garnet-type composition: [Ca1.5GdCe0.5]VIII[ZrFe]VI[Fe x Al3−x ]IVO12. Journal of Radioanalytical and Nuclear Chemistry, Vol. 273, Issue. 1, p. 73.
Yudintsev, Sergey V. Stefanovsky, Sergey V. and Ewing, Rodney C. 2007. Structural Chemistry of Inorganic Actinide Compounds. p. 457.
Popa, K. Konings, R.J.M. Wastin, F. Colineau, E. Magnani, N. and Raison, P.E. 2008. A re-evaluation of the heat capacity of cerium zirconate (Ce2Zr2O7). Journal of Physics and Chemistry of Solids, Vol. 69, Issue. 1, p. 70.
Yudinsev, S.V. Lukinykh, A.N. Tomilin, S.V. Lizin, A.A. and Stefanovsky, S.V. 2009. Alpha-decay induced amorphization of Cm-doped Gd2TiZrO7. Journal of Nuclear Materials, Vol. 385, Issue. 1, p. 200.
Stefanovsky, S V Yudintsev, S V and Livshits, T S 2010. New cubic structure compounds as actinide host phases. IOP Conference Series: Materials Science and Engineering, Vol. 9, Issue. , p. 012001.
Lu, Fengyuan Nyman, May Shen, Yiqiang Dong, Zhili Wang, Gongkai Zhang, Fuxiang Ewing, Rodney and Lian, Jie 2011. Ion Beam Irradiation-induced Amorphization in Nano-sized KxLnyTa2O7-v Tantalate Pyrochlore. MRS Proceedings, Vol. 1298, Issue. ,
Ewing, R. C. 2011. Actinides and radiation effects: impact on the back-end of the nuclear fuel cycle. Mineralogical Magazine, Vol. 75, Issue. 4, p. 2359.
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Polycrystalline pyrochlore oxides consisting of selected f elements (lanthanides and actinides) and Zr and Hf have been prepared and characterized. Characterization to date has been primarily by X-ray diffraction, both at room and at elevated temperatures. Initial studies concentrated on selected lanthanides and the Np, Pu and Am analogs (reported here) but have been extended to the other actinide elements through Cf. Data from these studies have been used to establish a systematic correlation regarding the fundamental materials science of these particular pyrochlores and structurally related fluorite-type dioxides. In addition to pursuing their materials science, we have addressed some potential technological applications for these materials. Some of the latter concern: (1) immobilization matrices; (2) materials for transmutation concepts; and (3) special nuclear fuel forms that can minimize the generation of nuclear wastes. For f elements that display both a III and IV oxidation state in oxide matrices, the synthetic path required for producing the desired pyrochlore oxide is dictated by their pseudo-oxidation potential the stability of the compound towards oxygen uptake. For the f elements that display an oxidationreduction cycle for pyrochlore-dioxide solid solution, X-ray diffraction can be used to identify the composition in the oxidation-reduction cycle, the oxygen stoichiometry and/or the composition. This paper concentrates on the Np, Pu and Am systems, and addresses the above aspects, the role of the crystal matrix in controlling the ceramic products as well as discussingsome custom-tailored materials.
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