EXAFS study of the structural phase transition in the americium zirconate pyrochlore

Martin, Philippe; Belin, Renaud C.; Valenza, P.J.; Scheinost, Andreas C.

doi:10.1016/j.jnucmat.2008.10.028

Cited by 34 publications

(22 citation statements)

References 29 publications

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“…For instance, zirconate pyrochlores remain in a defect fluorite structure (still crystalline) even after being exposed to ion irradiation at very high doses. Martin et al followed the order‐disorder transition induced by alpha decay in the 241 Am 2 Zr 2 O 7 phase by XAFS and XRD . The EXAFS data showed that the ZrO polyhedron was stable against irradiation, which would be responsible for the excellent resistance to amorphization for zirconate pyrochlore.…”

Section: Determination Of Actinide Speciation By Xafsmentioning

confidence: 99%

Exploring Actinide Materials Through Synchrotron Radiation Techniques

et al. 2014

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Synchrotron radiation (SR) based techniques have been utilized with increasing frequency in the past decade to explore the brilliant and challenging sciences of actinide‐based materials. This trend is partially driven by the basic needs for multi‐scale actinide speciation and bonding information and also the realistic needs for nuclear energy research. In this review, recent research progresses on actinide related materials by means of various SR techniques were selectively highlighted and summarized, with the emphasis on X‐ray absorption spectroscopy, X‐ray diffraction and scattering spectroscopy, which are powerful tools to characterize actinide materials. In addition, advanced SR techniques for exploring future advanced nuclear fuel cycles dealing with actinides are illustrated as well.

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Section: Determination Of Actinide Speciation By Xafsmentioning

confidence: 99%

Exploring Actinide Materials Through Synchrotron Radiation Techniques

et al. 2014

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“…Thus, self-irradiation could lead to well-known phenomena at the structural scale such as amorphization [6], allotropic transitions [7], lattice parameter expansion [5,8,9], defect formation [10,11] and pellet swelling at the macroscopic scale [12]. These self-irradiation-induced phenomena were notably studied for MA-bearing fuels by X-ray Absorption Spectroscopy (XAS) and X-ray Diffraction (XRD) measurements [7,[13][14]. Coupling these complementary techniques, respectively allows probing both the local range around a specific atom ($ 6Å) and the long range.…”

Section: Introductionmentioning

confidence: 99%

Alpha self-irradiation effect on the local structure of the U0.85Am0.15O2±x solid solution

Prieur

Martin

Lebreton

et al. 2012

Journal of Solid State Chemistry

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“…They demonstrated the efficacy of EXAFS in studying the local structure of these minor constituents of fuel matrixes. Recently, XAFS studies on Am containing oxides: (Zr, Y, Am)O 2Àx [6] and Am 2 Zr 2 O 7 [7] have also taken place. However, despite the importance of the structural and electronic information on pure Am oxides, XAFS studies on pure Am oxides have been scarce due to experimental difficulties.…”

Section: Introductionmentioning

confidence: 99%