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  • Raman spectra of synthetic non-substituted and U/Np/Pu- substituted thorutite (ThTi2O6) samples were collected. Factor group analysis was used to analyse the possible vibration modes. Theoretical simulations based on density functional theory (DFT) were performed on both CeTi2O6 and ThTi2O6. All possible vibrational modes for thorutite have been identified and assigned to the measured spectra. The presence and the effect of higher valence of U in thorutite has been discussed and the U-O bond lengths have been calculated by using the measured wavenumbers of nu1 (UO2)2+ symmetric stretching vibrations. The presence of U6+ in uranyl form can be inferred from the wavenumbers of U-O vibrations. Corresponding Np-O and Pu-O vibrations were not observed in the Raman spectra. Thus the presence of Np6+ and Pu6+ in the studied samples was not established.
  • Raman spectra of synthetic non-substituted and U/Np/Pu- substituted thorutite (ThTi2O6) samples were collected. Factor group analysis was used to analyse the possible vibration modes. Theoretical simulations based on density functional theory (DFT) were performed on both CeTi2O6 and ThTi2O6. All possible vibrational modes for thorutite have been identified and assigned to the measured spectra. The presence and the effect of higher valence of U in thorutite has been discussed and the U-O bond lengths have been calculated by using the measured wavenumbers of nu1 (UO2)2+ symmetric stretching vibrations. The presence of U6+ in uranyl form can be inferred from the wavenumbers of U-O vibrations. Corresponding Np-O and Pu-O vibrations were not observed in the Raman spectra. Thus the presence of Np6+ and Pu6+ in the studied samples was not established. (en)
Title
  • Theoretical and experimental Raman spectroscopic studies of synthetic thorutite (ThTi2O6)
  • Theoretical and experimental Raman spectroscopic studies of synthetic thorutite (ThTi2O6) (en)
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  • Theoretical and experimental Raman spectroscopic studies of synthetic thorutite (ThTi2O6)
  • Theoretical and experimental Raman spectroscopic studies of synthetic thorutite (ThTi2O6) (en)
skos:notation
  • RIV/00023272:_____/14:#0002416!RIV15-MK0-00023272
http://linked.open...avai/riv/aktivita
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  • V
http://linked.open...iv/cisloPeriodika
  • 1-3
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  • 50232
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  • RIV/00023272:_____/14:#0002416
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  • thorutite; crystal chemistry; Raman spectroscopy (en)
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  • NL - Nizozemsko
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  • [56692E029943]
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  • Journal of Nuclear Materials
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  • 446
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  • Čejka, Jiří
  • Karatchevtseva, Inna
  • Ken, Short
  • Kong, Linggen
  • Lumpkin, Gregory R.
  • Middleburgh, Simon C.
  • Qin, Mengjun
  • Zhang, Yingjie
http://linked.open...ain/vavai/riv/wos
  • 000331662400009
issn
  • 0022-3115
number of pages
http://bibframe.org/vocab/doi
  • 10.1016/j.jnucmat.2013.11.037
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