The effects of xenon implantation in ceria with and without lanthanum

Ye, B.; Yun, Di; Oaks, Aaron; Chen, Wei‐Ying; Kirk, Mark A.; Rest, J.; Yacout, A. M.; Stubbins, James F.

doi:10.1016/j.nimb.2011.01.073

Cited by 10 publications

(3 citation statements)

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“…Recently Razdan and Shoesmith studied the trivalent dopant influence on the UO 2 structure and a strong Raman band at 540 cm −1 was attributed to the O vacancies in SIMFUEL, Gd‐doped UO 2 , and Dy‐doped UO 2 samples. This feature was previously shown by similar studies performed on cerium dioxide, which has the same crystal structure and many similar material properties as uranium dioxide and is therefore used as a good surrogate material for uranium dioxide in literature . For example, McBride et al .…”

Section: Resultsmentioning

confidence: 55%

“…This feature was previously shown by similar studies performed on cerium dioxide, [46][47][48] which has the same crystal structure and many similar material properties as uranium dioxide and is therefore used as a good surrogate material for uranium dioxide in literature. [49][50][51][52] For example, McBride et al 46 studied Ce 1Àx RE x O 2Ày samples by Raman spectroscopy and they observed a broad band near 570 cm À1 which was attributed to O vacancies. They could also obtain similar results considering oxygen vacancies effect in CeO 2 system with Grenn's function model calculations.…”

Section: July 2015mentioning

confidence: 99%

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Raman and X‐ray Studies of Uranium–Lanthanum‐Mixed Oxides Before and After Air Oxidation

et al. 2015

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UO 2 samples doped with 6, 11, 22 mol% lanthanum were examined before and after air oxidation. To verify the formation of uranium-lanthanum-mixed oxide solid solutions, powder X-ray diffraction (XRD) analyses of the crystalline phases in the materials were carried out. The presence of oxygen vacancies in the La-doped UO 2 samples was identified by Raman spectrometry. It was evidenced by changes induced in the Raman spectra by air oxidation. This latter was carried out either by increasing the Raman laser power or by thermally treating the samples at 500 K for 370 h. In addition, oxidation behavior differences of pure and La-doped UO 2 samples were reported by comparing XRD and Raman results of the samples before and after air oxidation. It was shown that the concentration of the M 4 O 9 (M: U, La) phase increased with increasing content of La, whereas inhibition for the formation of M 3 O 8 phase was observed.

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Section: Resultsmentioning

confidence: 55%