G. Allen and N. R. Holmes, A mechanism for the UO2 to ??-U3O8 phase transformation, Journal of Nuclear Materials, vol.223, issue.3, pp.231-237, 1995.
DOI : 10.1016/0022-3115(95)00025-9

G. Allen, P. Tempest, and A. J. Tyler, Coordination model for the defect structure of UO 2+x and U 4 O 9, Nature, pp.295-343, 2010.

S. Allen, . II. Theory of the First-Order Phase Transition, Physical Review, vol.167, issue.2, pp.492-496, 1968.
DOI : 10.1103/PhysRev.167.492

URL : https://hal.archives-ouvertes.fr/pasteur-01352667

D. A. Andersson, F. J. Espinosa-faller, B. P. Uberuaga, and A. S. Conradson, Stability and migration of large oxygen clusters in UO 2+x : Density functional theory calculations, J. Chem. Phys, pp.136-234702, 2012.

D. A. Andersson, B. P. Uberuaga, P. V. Nerikar, C. Unal, A. C. Stanek et al., : Density functional theory calculations, UO 2+x : Density functional theory calculations, p.54105, 2011.
DOI : 10.1103/PhysRevB.84.054105

D. A. Andersson, T. Watanabe, C. Deo, and A. B. Uberuaga, from first principles, Physical Review B, vol.80, issue.6, p.60101, 2009.
DOI : 10.1103/PhysRevB.80.060101

V. I. Anisimov, J. Zaanen, and A. O. Andersen, Band theory and Mott insulators : Hubbard U instead of Stoner I, Phys. Rev. B, pp.44-943, 1991.

A. Apelblat, Vapour pressures of H 16 O and H 18 O, and 2 2 saturated aqueous solutions of KCl from T s =298k to T s =318k by the isoteniscopic method, J. Chem. Thermodynamics, pp.30-1191, 1998.

S. Aronson and J. Belle, Nonstoichiometry in Uranium Dioxide, The Journal of Chemical Physics, vol.29, issue.1, pp.151-158, 1958.
DOI : 10.1063/1.1744415

S. Aronson, R. B. Roof, and A. J. Belle, Kinetic Study of the Oxidation of Uranium Dioxide, The Journal of Chemical Physics, vol.27, issue.1, pp.137-144, 1957.
DOI : 10.1063/1.1743653

A. B. Auskern and . Belle, Oxygen ion self-diffusion in uranium dioxide, Journal of Nuclear Materials, vol.3, issue.3, pp.267-276, 1961.
DOI : 10.1016/0022-3115(61)90194-5

Y. Baer and J. Schoenes, Electronic structure and Coulomb correlation energy in UO2 single crystal, Solid State Communications, vol.33, issue.8, pp.885-888, 1980.
DOI : 10.1016/0038-1098(80)91210-7

M. Baichi, C. Chatillon, G. Ducrosa, and A. K. Froment, Thermodynamics of the O-U system. IV -Critical assessment of chemical potentials in the U-UO 2.01 composition range, J. Nucl. Mater, pp.359-376, 2006.
URL : https://hal.archives-ouvertes.fr/hal-00141058

J. L. Bates, C. A. Hinman, and A. T. Kawada, Electrical Conductivity of Uranium Dioxide, Journal of the American Ceramic Society, vol.26, issue.3, pp.652-656, 1967.
DOI : 10.1063/1.1732057

J. Belle, Oxygen and uranium diffusion in uranium dioxide (a review), Journal of Nuclear Materials, vol.30, issue.1-2, pp.3-15, 1969.
DOI : 10.1016/0022-3115(69)90163-9

C. Berthinier, F. H. Rado, and C. Chatillon, Thermodynamic assessment of oxygen diffusion in non-stoichiometric UO2??x from experimental data and Frenkel pair modeling, Journal of Nuclear Materials, vol.433, issue.1-3, pp.265-286, 2013.
DOI : 10.1016/j.jnucmat.2012.09.011

URL : https://hal.archives-ouvertes.fr/hal-00838960

D. J. Bevan, I. E. Grey, and A. B. Willis, The crystal structure of ?-U 4 O 9, J. Solid State Chem, pp.61-62, 1986.

P. E. Blackburn, Oxygen Dissociation Pressures over Uranium Oxides, The Journal of Physical Chemistry, vol.62, issue.8, pp.897-902, 1958.
DOI : 10.1021/j150566a001

P. E. Blackburn, J. Weissbart, and A. E. Gulbransen, Oxidation of Uranium Dioxide, The Journal of Physical Chemistry, vol.62, issue.8, pp.902-908, 1958.
DOI : 10.1021/j150566a002

P. E. Blöchl, Projector augmented-wave method, Physical Review B, vol.50, issue.24, pp.17954-17979, 1994.
DOI : 10.1103/PhysRevB.50.17953

A. H. Booth, A method of calculating fission gas diffusion from UO 2 fuel and its application to the X-2-f loop test, 1957.

G. Boureau, C. Giaconia, and A. R. Tétot, Defect modelling in nonstoichiometric oxides, Solid State Ionics, pp.397-401, 1997.

G. Brillant, F. Gupta, and A. A. Pasturel, Fission products stability in uranium dioxide, Journal of Nuclear Materials, vol.412, issue.1, pp.170-176, 2011.
DOI : 10.1016/j.jnucmat.2011.02.054

URL : https://hal.archives-ouvertes.fr/hal-00640089

G. Busker, R. Grimes, and A. M. Bradford, The diffusion of iodine and caesium in the UO2??x lattice, Journal of Nuclear Materials, vol.279, issue.1, pp.46-50, 2000.
DOI : 10.1016/S0022-3115(99)00274-3

D. Cabaret, F. Mauri, and A. G. Henderson, Oxygen K-edge XANES of germanates investigated using first-principles calculations, Phys. Rev. B, pp.75-184205, 2007.

A. Caneiro, N. Bonnat, and A. J. Fouletier, Measurement and regulation of oxygen content in selected gases using solid electrolyte cells. IV. Accurate preparation of CO2-CO and H2O-H2 mixtures, Journal of Applied Electrochemistry, vol.116, issue.1, pp.11-83, 1981.
DOI : 10.1007/BF00615326

G. Carlot-and-p and . Garcia, Etude bibliographique et proposition d'expériences relatives à la diffusion thermique de xénon et du krypton dans le dioxyde d'uranium -Premiers résultats de caractérisation, pp.3-010, 2003.

Y. Chen, H. Y. Geng, Y. Kaneta, M. Kinoshita, and A. S. Iwata, First principles modeling of stability mechanism of nonstoichiometric uranium dioxide, Computational Materials Science, vol.49, issue.4, pp.364-368, 2010.
DOI : 10.1016/j.commatsci.2010.01.018

P. Y. Chevalier, E. Ficher, and A. B. Cheynet, Progress in the thermodynamic modelling of the O???U binary system, Journal of Nuclear Materials, vol.303, issue.1, pp.1-28, 2002.
DOI : 10.1016/S0022-3115(02)00813-9

K. Clausen, W. Hayes, R. O. Macdonald, and A. M. Hutch-ings, Observation of oxygen frekel pair disorder in uranium dioxide above 2000 K by use of neutron-scattering techniques, Phys. Rev. Lett, pp.52-1238, 1984.

K. Compaan and Y. Haven, Correlation factors for diffusion in solids. Part 2.???Indirect interstitial mechanism, Trans. Faraday Soc., vol.54, issue.0, pp.1498-1508, 1958.
DOI : 10.1039/TF9585401498

S. D. Conradson, B. D. Begg, D. L. Clark, M. D. Den-auwer, P. K. Dorhout et al., Charge distribution and local structure and speciation in the UO 2+x and PuO 2+x binary oxides for x<0, J. Solid State Chem, vol.25, pp.178-521, 2005.

P. Contamin, J. Bacmann, and A. J. Marin, Autodiffusion de l'oxygene dans le dioxyde d'uranium surstoechiometrique, Journal of Nuclear Materials, vol.42, issue.1, pp.54-64, 1972.
DOI : 10.1016/0022-3115(72)90007-4

B. Cox, Pellet-clad interaction (PCI) failures of zirconium alloy fuel cladding ??? A review, Journal of Nuclear Materials, vol.172, issue.3, pp.249-292, 1990.
DOI : 10.1016/0022-3115(90)90282-R

J. Crocombette, Ab initio energetics of some fission products (Kr, I, Cs, Sr and He) in uranium dioxide, Journal of Nuclear Materials, vol.305, issue.1, pp.29-36, 2002.
DOI : 10.1016/S0022-3115(02)00907-8

J. Crocombette, F. Jollet, L. T. Nga, and A. T. Petit, Plane-wave pseudopotential study of point defects in uranium dioxide, Physical Review B, vol.64, issue.10, p.104107, 2001.
DOI : 10.1103/PhysRevB.64.104107

J. Crocombette, D. Torumba, and A. A. Chartier, Charge states of point defects in uranium oxide calculated with a local hybrid functional for correlated electrons, Physical Review B, vol.83, issue.18, p.184107, 2011.
DOI : 10.1103/PhysRevB.83.184107

E. Darque-ceretti, H. Migeon, and A. M. Aucouturier, Emission ionique secondaire SIMS -Principes et appareillages, 1998.

P. Debye-and-e and . Hückel, Zur theorie der elektrolite. I. Gefrierpunktserniedrigung und verwandte erscheinungen, Phsikalische Zeitschrift, vol.24, pp.185-206, 1923.

L. Desgranges, G. Baldinozzi, D. Siméone, and A. H. Fischer, Refinement of the ?-U 4 O 9 crystalline structure: new insight into the U 4 O 9 ? U 3 O 8 transformation, Inorg. Chem, pp.50-6146, 2011.
URL : https://hal.archives-ouvertes.fr/hal-00639190

R. Dieckmann, Point defects and transport properties of binary and ternary oxides, Solid State Ionics, vol.12, pp.1-22, 1984.
DOI : 10.1016/0167-2738(84)90126-7

B. Dorado, Etude des propriétés de transport atomique dans le dioxyde d'uranium par le calcul de structure electronique : influence des fortes correlations, 2010.

B. Dorado, D. A. Andersson, C. R. Stanek, B. P. Uberuaga, G. Martin et al., First-principles calculations of uranium diffusion in uranium dioxide, Physical Review B, vol.86, issue.3, 2012.
DOI : 10.1103/PhysRevB.86.035110

B. Dorado, M. Freyss, and A. G. Martin, GGA+U study of the incorporation of iodine in uranium dioxide, The European Physical Journal B, vol.69, issue.2, pp.203-209, 2009.
DOI : 10.1140/epjb/e2009-00145-0

B. Dorado, P. Garcia, G. Carlot, C. Davoisne, M. Fraczkiewicz et al., First-principles calculation and experimental study of oxygen diffusion in uranium dioxide, Physical Review B, vol.83, issue.3, pp.83-035126, 2011.
DOI : 10.1103/PhysRevB.83.035126

URL : https://hal.archives-ouvertes.fr/hal-00639167

B. Dorado, G. Jomard, M. Freyss, and A. M. Bertolus, Stability of oxygen point defects in UO 2 by first-principles DFT+U calculations: Occupation matrix control and Jahn-Teller distortion, Phys. Rev. B, pp.82-035114, 2010.

N. J. Dudney, R. L. Coble, and A. H. Tuller, Electrical Conductivity of Pure and Yttria-Doped Uranium Dioxide, Journal of the American Ceramic Society, vol.64, issue.10, pp.627-631, 1981.
DOI : 10.1016/0022-3115(66)90006-7

K. L. Duncan, Y. Wang, S. R. Bishop, F. Ebrahimi, and A. E. Wachsman, Role of Point Defects in the Physical Properties of Fluorite Oxides, Journal of the American Ceramic Society, vol.3, issue.10, pp.3162-3166, 2006.
DOI : 10.1016/S0167-2738(99)00319-7

J. Faber and G. H. Lander, : Antiferromagnetic state, Physical Review B, vol.14, issue.3, pp.1151-1164, 1976.
DOI : 10.1103/PhysRevB.14.1151

M. Fraczkiewicz, Dopage au chrome du dioxide d'uranium : modifications physiques induites, 2009.

M. Freyss, T. Petit, and A. J. Crocombette, Point defects in uranium dioxide: Ab initio pseudopotential approach in the generalized gradient approximation, Journal of Nuclear Materials, vol.347, issue.1-2, pp.44-51, 2005.
DOI : 10.1016/j.jnucmat.2005.07.003

M. Freyss, N. Vergnet, and A. T. Petit, Ab initio modeling of the behavior of helium and xenon in actinide dioxide nuclear fuels, Journal of Nuclear Materials, vol.352, issue.1-3, pp.144-150, 2006.
DOI : 10.1016/j.jnucmat.2006.02.048

C. A. Friskney and J. A. Turnbull, The characteristics of fission gas release from uranium dioxide during irradiation, Journal of Nuclear Materials, vol.79, issue.1, pp.184-198, 1979.
DOI : 10.1016/0022-3115(79)90446-X

P. Garcia, Etude de la mobilité thermique et sous irradiation de l'iode dans le dioxyde d'uranium, Note Technique SESC, pp.6-018, 2007.

P. Garcia, M. Fraczkiewicz, C. Davoisne, G. Carlot, B. Pasquet et al., Oxygen diffusion in relation to p-type doping in uranium dioxide, Journal of Nuclear Materials, vol.400, issue.2, pp.400-112, 2010.
DOI : 10.1016/j.jnucmat.2010.02.019

URL : https://hal.archives-ouvertes.fr/hal-00583425

F. Garrido, L. Nowicki, and A. L. Thomé, Channeling investigation of the crystalline structure of U 4 O 9-y, Phys. Rev. B, pp.74-184114, 2006.

H. Y. Geng, Y. Chen, Y. Kaneta, M. Iwasawa, T. Ohnuma et al., Point defects and clustering in uranium dioxide by LSDA+U calculations, Phys. Rev. B, pp.77-104120, 2008.

H. Y. Geng, Y. Chen, Y. Kaneta, and A. M. Kinoshita, investigation on oxygen defect clusters in UO2+x, Applied Physics Letters, vol.93, issue.20, p.201903, 2008.
DOI : 10.1063/1.3035846

P. Gerdanian-and-m and . Dodé, Etude thérmodynamique des oxides UO 2± x, J. Chim. Phys. Phys. Chim. Biol, vol.62, pp.171-184, 1965.

R. W. Grimes, R. G. Ball, and A. C. Catlow, Site preference and binding of iodine and caesium in uranium dioxide, Journal of Physics and Chemistry of Solids, vol.53, issue.4, pp.53-475, 1992.
DOI : 10.1016/0022-3697(92)90091-Q

R. W. Grimes and C. R. Catlow, The Stability of Fission Products in Uranium Dioxide, Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, vol.335, issue.1639, pp.335-609, 1991.
DOI : 10.1098/rsta.1991.0062

F. Grønvold, High-temperature X-ray study of uranium oxides in the UO2???U3O8 region, Journal of Inorganic and Nuclear Chemistry, vol.1, issue.6, pp.357-370, 1955.
DOI : 10.1016/0022-1902(55)80046-2

F. M. Groot, M. Grioni, J. C. Fuggle, J. Ghijsen, G. Sawatzky et al., Oxygen 1s X-ray absorption edges of transition metal oxides, Phys. Rev. B, pp.40-5715, 1989.

C. Guénau, M. Baichi, D. Labroche, C. Chatillon, and A. B. Sund-man, Thermodynamic assessment of the uranium???oxygen system, Journal of Nuclear Materials, vol.304, issue.2-3, pp.161-175, 2002.
DOI : 10.1016/S0022-3115(02)00878-4

F. Gupta, G. Brillant, and A. A. Pasturel, Correlation effects and energetics of point defects in uranium dioxide: a first principle investigation, Philosophical Magazine, vol.1, issue.17, pp.2561-2569, 2007.
DOI : 10.1016/0022-4596(90)90183-X

URL : https://hal.archives-ouvertes.fr/hal-00513819

Z. Hadari, M. Kroupp, and A. Y. Wolfson, Self-diffusion measurements of oxygen in UO 2+x by the nuclear reaction 18 0(p,?) 19 F, J. Appl. Phys, p.42, 1971.

K. Hagemark-and-m and . Broli, Equilibrium oxygen pressures over the nonstoicheiometric uranium oxides UO2+x and U3O8???z at higher temperatures, Journal of Inorganic and Nuclear Chemistry, vol.28, issue.12, pp.2837-2850, 1966.
DOI : 10.1016/0022-1902(66)80010-6

J. D. Higgs, W. T. Thompson, B. J. Lewis, and A. S. Vogel, Kinetics of precipitation of U4O9 from hyperstoichiometric UO2+x, Journal of Nuclear Materials, vol.366, issue.3, pp.297-305, 2007.
DOI : 10.1016/j.jnucmat.2007.03.054

W. H. Hocking, R. A. Verral, and A. I. Muir, Migration behaviour of iodine in nuclear fuel, Journal of Nuclear Materials, vol.294, issue.1-2, pp.45-52, 2001.
DOI : 10.1016/S0022-3115(01)00447-0

H. Hoekstra, S. Siegel, and A. P. Charpin, The synthesis of UO2??37 at high pressure, Journal of Inorganic and Nuclear Chemistry, vol.30, issue.2, pp.519-523, 1968.
DOI : 10.1016/0022-1902(68)80477-4

H. R. Hoekstra, A. Santoro, and A. S. Siegel, The low temperature oxidation of UO2 and U4O9, Journal of Inorganic and Nuclear Chemistry, vol.18, pp.166-178, 1961.
DOI : 10.1016/0022-1902(61)80384-9

P. W. Hohenberg and . Kohn, Inhomogeneous Electron Gas, Physical Review, vol.136, issue.3B, pp.864-871, 1964.
DOI : 10.1103/PhysRev.136.B864

J. M. Huberty, N. T. Kita, R. Kozdon, P. R. Heck, J. H. Fournelle et al., VALLEY, Crystal orientation effects in ? 18 O for magnetite and hematite by SIMS, Chemical Geol, pp.276-269, 2010.

Y. Iwano, A defect structure study of nonstoichiometric uranium dioxide by statistical-mechanical models, Journal of Nuclear Materials, vol.209, issue.1, pp.79-91, 1994.
DOI : 10.1016/0022-3115(94)90249-6

M. Iwasawa, Y. Chen, Y. Kaneta, T. Ohnuma, H. Geng et al., First-Principles Calculation of Point Defects in Uranium Dioxide, MATERIALS TRANSACTIONS, vol.47, issue.11, pp.47-2651, 2006.
DOI : 10.2320/matertrans.47.2651

J. A. Aguiar, N. Grönbech-jensen, A. Perlov, V. Milman, S. P. Gao et al., Electronic structure of oxide fuels from experiment and first principles calculations, Journal of Physics: Conference Series, vol.241, pp.241-012062, 2010.
DOI : 10.1088/1742-6596/241/1/012062

N. A. Javed, Thermodynamic study of hypostoichiometric urania, Journal of Nuclear Materials, vol.43, issue.3, pp.219-224, 1972.
DOI : 10.1016/0022-3115(72)90053-0

L. Johnson, C. Ferry, C. Poinssot, and A. P. Lovera, Spent fuel radionuclide source-term model for assessing spent fuel performance in geological disposal. Part I: Assessment of the instant release fraction, Journal of Nuclear Materials, vol.346, issue.1, pp.346-56, 2005.
DOI : 10.1016/j.jnucmat.2005.04.071

F. Jollet, P. Petit, S. Gota, N. Thromat, M. Gautier-soyer et al., The electronic structure of uranium dioxide: an oxygen K-edge x-ray absorption study, Journal of Physics: Condensed Matter, vol.9, issue.43, pp.9-9393, 1997.
DOI : 10.1088/0953-8984/9/43/022

W. Jost and E. M. Loebl, Diffusion in solid, liquids, gases, 1960.

M. Kato, K. Konashi, and A. N. Nakae, Analysis of oxygen potential of, J. Nucl. Mater, pp.389-164, 2009.

M. Kato, K. Morimoto, T. Tamura, T. Sunaoshi, K. Konashi et al., Oxygen chemical diffusion in hypo-stoichiometric MOX, Journal of Nuclear Materials, vol.389, issue.3, pp.416-419, 2009.
DOI : 10.1016/j.jnucmat.2009.02.018

W. Khon and L. J. Sham, Self-Consistent Equations Including Exchange and Correlation Effects, Physical Review, vol.140, issue.4A, pp.1133-1138, 1965.
DOI : 10.1103/PhysRev.140.A1133

K. C. Kim and D. R. Olander, Oxygen diffusion in UO2???x, Journal of Nuclear Materials, vol.102, issue.1-2, pp.192-199, 1981.
DOI : 10.1016/0022-3115(81)90559-6

K. Kiukkola, High-Temperature Electrochemical Study of Uranium Oxides in the UO2-U3O8 Region., Acta Chemica Scandinavica, vol.16, pp.327-345, 1962.
DOI : 10.3891/acta.chem.scand.16-0327

P. Kofstad, Nonstoichiometry, Diffusion, and Electrical Conductivity in Binary Oxides, 1960.

A. Kotani-and-h and . Ogasawara, Theory of core-level spectroscopy in actinide systems, Physica B: Condensed Matter, vol.186, issue.188, pp.186-188, 1993.
DOI : 10.1016/0921-4526(93)90485-O

K. Kvashnina, High energy resolution X-ray spectroscopy of lanthanide and actinide systems, ACTINET Workshop, 2010.

D. Labroche, O. Dugne, and A. C. Chatillon, Thermodynamics of the O-U system. I -Oxygen chemical potential critical assessment in the UO 2 - U 3 O 8 composition range, J. Nucl. Mater, pp.312-333, 2003.

G. H. Lander, J. Faber, A. J. Freeman, and A. J. Desclaux, : Paramagnetic state, Physical Review B, vol.13, issue.3, pp.1177-1182, 1976.
DOI : 10.1103/PhysRevB.13.1177

G. T. Lawrence, A review of the diffusion coefficient of fission-product rare gases in uranium dioxide, Journal of Nuclear Materials, vol.71, issue.2, pp.195-218, 1978.
DOI : 10.1016/0022-3115(78)90418-X

A. B. Lidiard, Self-diffusion of uranium in UO2, Journal of Nuclear Materials, vol.19, issue.1, pp.106-108, 1966.
DOI : 10.1016/0022-3115(66)90138-3

A. I. Liechtenstein and M. I. Katsnelson, calculations of quasiparticle band structure in correlated systems: LDA++ approach, Physical Review B, vol.57, issue.12, pp.6884-6895, 1998.
DOI : 10.1103/PhysRevB.57.6884

W. V. Lierde and L. D. Jonghe, The controlled oxidation of single crystals of UO2 to U4O9, Solid State Communications, vol.2, issue.5, pp.129-131, 1964.
DOI : 10.1016/0038-1098(64)90399-0

W. V. Lierde, J. Pelsmaekers, and A. A. Lecocq-robert, On the phase limits of U4O9, Journal of Nuclear Materials, vol.37, issue.3, pp.276-285, 1870.
DOI : 10.1016/0022-3115(70)90157-1

T. B. Lindemer and T. M. Besmann, Chemical thermodynamic representation of, Journal of Nuclear Materials, vol.130, pp.473-488, 1985.
DOI : 10.1016/0022-3115(85)90334-4

S. Ling, High-concentration point-defect chemistry: Statistical-thermodynamic approach applied to nonstoichiometric cerium dioxides, Physical Review B, vol.49, issue.2, pp.864-880, 1994.
DOI : 10.1103/PhysRevB.49.864

J. F. Marin and P. Contamin, Uranium and oxygen self-diffusion in UO2, Journal of Nuclear Materials, vol.30, issue.1-2, pp.16-25, 1969.
DOI : 10.1016/0022-3115(69)90164-0

T. Markin-and-r and . Bones, The determination of changes in free energies for uranium oxides using a high temperature galvanic cell, 1962.

P. Martin, M. Ripert, G. Carlot, P. Parent, and A. C. Laffon, A study of molybdenum behaviour in UO2 by X-ray absorption spectroscopy, Journal of Nuclear Materials, vol.326, issue.2-3, pp.132-143, 2004.
DOI : 10.1016/j.jnucmat.2004.01.006

P. Martin, C. Sabathier-devals, M. Fraczkiewicz, and A. G. , CAR- LOT, Comparaison de l'état chimique du chrome par spectroscopie d'absorption X dans les combustibles industriels UO 2 dopés chrome CONCERTO et AFA3GLAA, Note technique SESC, pp.9-12, 2009.

N. Masaki-and-t and . Ishii, The preparation of U4O9 single crystal, Journal of Crystal Growth, vol.6, issue.2, pp.207-209, 1970.
DOI : 10.1016/0022-0248(70)90045-X

P. Matheron-and-l and . Silvestre, Fabrication d'échantillons d'UO 2 dopés chrome destines à la validation du modèle thermodynamique de solubilité de Cr dans l, pp.8-11, 2008.

H. Matzke, Atomic transport properties in UO 2 and mixed oxides (U,Pu)O 2, J. Chem. Soc. Faraday Trans, vol.2, pp.83-1121, 1987.

S. Mazevet, M. Torrent, V. Recoules, and A. F. Jollet, Calculations of the transport properties within the PAW formalism, High Energy Density Phys, pp.84-88, 2010.

R. J. Mceachern, A review of kinetic data on the rate of U3O7 formation on UO2, Journal of Nuclear Materials, vol.245, issue.2-3, pp.238-247, 1997.
DOI : 10.1016/S0022-3115(96)00733-7

R. J. Mceachern and P. Taylor, A review of the oxidation of uranium dioxide at temperatures below 400??C, Journal of Nuclear Materials, vol.254, issue.2-3, pp.87-121, 1998.
DOI : 10.1016/S0022-3115(97)00343-7

A. Modin, Y. Yun, M. T. Suzuki, J. Vegelius, L. Werme et al., Indication of single-crystal PuO 2 oxidation from O 1-s x-ray absorption spectra, Phys. Rev. B, pp.83-075113, 2011.

G. E. Murch, D. H. Bradhurst, A. H. De, and . Bruin, Oxygen self-diffusion in non-stoichiometric uranium dioxide, Philosophical Magazine, vol.44, issue.6, pp.1141-1150, 1975.
DOI : 10.1080/14786437508228095

G. E. Murch, C. Richard, and A. A. Catlow, Oxygen diffusion in UO 2 , ThO 2 and PuO 2, J. Chem. Soc., Faraday Trans, vol.2, pp.83-1157, 1987.

G. M. Murch-and-r and . Thorn, The mechanism of oxygen diffusion in near stoichiometric uranium dioxide, Journal of Nuclear Materials, vol.71, issue.2, pp.219-226, 1978.
DOI : 10.1016/0022-3115(78)90419-1

P. Nagels, J. Devreese, and A. M. Denayer, Electronic Conduction in Single Crystals of Uranium Dioxide, Journal of Applied Physics, vol.35, issue.4, pp.1175-1180, 1964.
DOI : 10.1063/1.1713588

A. Nakamura and T. Fujino, Thermodynamic analysis on point defects of UO2+x at relatively small deviation from stoichiometry between 600 and 1400??C, Journal of Nuclear Materials, vol.140, issue.2, pp.113-130, 1986.
DOI : 10.1016/0022-3115(86)90239-4

M. Newville, Fundamentals of XAFS, Revision 1.6, 2004.

P. Ochin, C. Petot, and A. G. Petot-ervas, Thermodynamic study of point defects in Cu2?????O. electrical conductivity measurements at low oxygen partial pressures, Solid State Ionics, vol.12, pp.135-143, 1984.
DOI : 10.1016/0167-2738(84)90140-1

K. Park and D. R. Olander, A defect model for the oxygen potential of urania, High Temp. Sci, vol.29, pp.203-222, 1990.

W. Parrish and J. Langford, Powder and related techniques: X-ray techniques , International Tables of Crystallography -Volume C, p.517, 1992.

P. O. Perron, Thermodynamics of non-stoichiometric uranium dioxide, 1968.

G. Petot-ervas and A. C. Petot, Experimental procedure for the determination of diffusion coefficients in ionic compounds -Application to yttrium-doped zirconia, Solid State Ionics, pp.27-39, 1999.

J. Philibert, Atom movements: Diffusion and Mass transport in solids, Editions de Physique, 1991.

E. Pizzi, P. Garcia, G. Carlot, H. Palancher, S. Maillard et al., Iodine Volume Diffusion Measurements in Uranium Dioxide, Defect and Diffusion Forum, vol.323, issue.325, pp.323-325, 2012.
DOI : 10.4028/www.scientific.net/DDF.323-325.197

S. Portier, S. Brémier, and A. C. Walker, Secondary ion mass spectrometry of irradiated nuclear fuel and cladding: An overview, International Journal of Mass Spectrometry, vol.263, issue.2-3, pp.113-126, 2007.
DOI : 10.1016/j.ijms.2007.01.016

A. Poulesquen, L. Desgranges, and A. C. Ferry, An improved model to evaluate the oxidation kinetics of uranium dioxide during dry storage, Journal of Nuclear Materials, vol.362, issue.2-3, pp.402-410, 2007.
DOI : 10.1016/j.jnucmat.2007.01.084

S. G. Prussin, D. R. Olander, W. K. Lau, and A. L. Hansson, Release of fission products (Xe, I, Te, Cs, Mo and Tc) from polycrystalline UO2, Journal of Nuclear Materials, vol.154, issue.1, pp.25-37, 1988.
DOI : 10.1016/0022-3115(88)90115-8

L. Quémard, L. Desgranges, V. Bouineau, M. Pijolat, G. Baldinozzi et al., On the origin of the sigmoid shape in the UO 2 oxidation weight gain curves, J. Eur. Ceram. Soc, pp.29-2791, 2009.

C. Riglet-martial, Proposition d'un modèle thermodynamique de solubilité du chrome dans le dioxyde d'uranium, Note technique SESC, pp.6-010, 2006.

L. A. Roberts and . Walter, Equilibrium pressures and phase relations in the uranium oxide system, Journal of Inorganic and Nuclear Chemistry, vol.22, issue.3-4, pp.213-229, 1961.
DOI : 10.1016/0022-1902(61)80437-5

G. Rousseau, L. Desgranges, F. Charlot, N. Millot, J. C. Nièpce et al., A detailed study of UO 2 to U 3 O 8 oxidation phases and the associated rate-limiting steps, J. Nucl. Mater, pp.355-365, 2006.
URL : https://hal.archives-ouvertes.fr/hal-00115276

P. Ruello, Etude du changement de comportement du dioxide d'uranium au voisinage de 1300 K : propriétés électriques, optiques et structurales, 2001.

P. Ruello, K. D. Becker, K. Ullrich, L. Desgranges, C. Petot et al., Thermal variation of the optical absorption of UO 2 : determination of the small polaron self-energy, J. Nucl. Mater, pp.328-374, 2004.

P. Ruello, G. Petot-ervas, and A. C. Petot, Electrical Conductivity and Thermoelectric Power of Uranium Dioxide, Journal of the American Ceramic Society, vol.23, issue.5, pp.604-611, 2005.
DOI : 10.1016/0022-3115(85)90334-4

URL : https://hal.archives-ouvertes.fr/hal-00120935

M. Saidy, W. H. Hocking, J. F. Mouris, P. Garcia, G. Carlot et al., Thermal diffusion of iodine in UO2 and UO2+x, Journal of Nuclear Materials, vol.372, issue.2-3, pp.405-415, 2008.
DOI : 10.1016/j.jnucmat.2007.03.272

M. Schroeder, J. H. Lee, and A. M. Martin, Influence of impurity and dopant ions on the electrotransport properties in oxides, Solid State Ionics, pp.101-103, 1997.

H. Solmon, Autodiffusion de l'oxygène, du zirconium et de l'yttrium dans la zircone cubique stabilisée par l'yttrium, 1992.

W. H. Stevens, J. R. Macewans, and A. A. Ross, The diffusion behaviour of fission xenon in uranium dioxide, US Report, pp.7610-7617, 1960.

A. M. Stoneham, Ionic solids at high temperature, 1989.
DOI : 10.1142/0423

R. J. Tarento, Influence of evaporation and exchange reactions at the surface on the evolution of an arbitrary tracer distribution by diffusion, Revue de Physique Appliqu??e, vol.24, issue.1, pp.11-16, 1989.
DOI : 10.1051/rphysap:0198900240101100

URL : https://hal.archives-ouvertes.fr/jpa-00246021

S. R. Teixeira-and-k and . Imakuma, High temperature X-ray diffraction study of the U4O9 formation on UO2 sintered plates, Journal of Nuclear Materials, vol.178, issue.1, pp.33-39, 1991.
DOI : 10.1016/0022-3115(91)90453-E

M. Tetembaum and P. D. Hunt, High???Temperature Thermodynamic Properties of Oxygen???Deficient Urania, The Journal of Chemical Physics, vol.49, issue.11, pp.4739-4744, 1968.
DOI : 10.1063/1.1669953

R. Tetot-and-p and . Gerdanian, Thermodynamic test of defect formation energies calculated by simulation techniques for non-stoichiometric oxides. application to Ce 2-x O, UO 2± x , Ti 2-x O, Mn 1-x O, Fe 1-x O, J. Phys. Chem. Solids, pp.46-1131, 1985.

J. Töpfer, L. Liu, and A. R. Dieckmann, Deviation from stoichiometry and point defects in (ZnxMn1$minus;xFe2)1$minus;$delta;/3O4, Solid State Ionics, vol.159, issue.3-4, pp.397-404, 2003.
DOI : 10.1016/S0167-2738(03)00030-4

E. Veziteu, Etude des propriétés de transport de UO 2± x dopé Gd, Mastère franco-roumain, Science et Technologie des Matériaux, 2006.

C. Viaud, L. Desgranges, C. Valot, G. Rousseau, and A. P. Tay-lor, Etude des phases cristallines créées lors de l'oxydation de pastilles d'UO 2 vierges en condition d'entreposage par l'analyse Rietveld de diffractogrammes de DRX, Note

H. Werner, Quantitative analysis of films by ion microbeam methods

S. Whillock and J. H. Pearce, A method of determining the distribution of U 4 O 9 in oxidised UO 2, J. Nucl. Mater, pp.175-121, 1990.

B. T. Willis, Neutron Diffraction Studies of the Actinide Oxides. I. Uranium Dioxide and Thorium Dioxide at Room Temperature, Proc. R. Soc, pp.122-133, 1963.
DOI : 10.1098/rspa.1963.0117

P. W. Winter, The electronic transport properties of UO2, Journal of Nuclear Materials, vol.161, issue.1, pp.38-43, 1989.
DOI : 10.1016/0022-3115(89)90460-1

Z. Y. Wu, F. Jollet, S. Gota, N. Thropmat, M. Gautier-soyer et al., X-ray absorption at the oxygen K edge in cubic f oxides examined using a full multiple-scattering approach, Journal of Physics: Condensed Matter, vol.11, issue.37, pp.11-7185, 1999.
DOI : 10.1088/0953-8984/11/37/314

E. Yakub, C. Ronchi, and A. I. Iosilevski, Thermodynamic model of solid non-stoichiometric uranium dioxide, Journal of Physics: Condensed Matter, vol.18, issue.4, pp.1227-1248, 2006.
DOI : 10.1088/0953-8984/18/4/010

S. W. Yu, J. Tobin, J. C. Crowhurst, S. Sharma, J. K. Dewhurst et al., SIEKHAUS, f-f origin of the insulating state in uranium dioxide: X-ray absorption experiments and first-principles calculations, Phys. Rev. B, pp.83-165102, 2011.