TRLFS of Eu3+ and Cm3+ doped La2Zr 2O7: A comparison of defect fluorite to pyrochlore structures

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Kiel S. Holliday
  • Sarah Finkeldei
  • Stefan Neumeier
  • Clemens Walther
  • Dirk Bosbach
  • Thorsten Stumpf

External Research Organisations

  • Karlsruhe Institute of Technology (KIT)
  • Lawrence Livermore National Laboratory
  • Forschungszentrum Jülich
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Details

Original languageEnglish
Pages (from-to)479-485
Number of pages7
JournalJournal of Nuclear Materials
Volume433
Issue number1-3
Publication statusPublished - Feb 2013

Abstract

Time-resolved laser fluorescence spectroscopy (TRLFS) was used to probe the local environment of Eu3+ and Cm3+ doped into La 2Zr2O7 in both the defect fluorite and pyrochlore structures. It is evident that each structure has a dominant environment for the trivalent dopant ion. This makes it possible to characterize the fluorescence emission spectrum and lifetime for each Eu3+ and Cm3+ species. This data can be used for a relative quantification of the Eu3+ or Cm3+ in each local environment. This technique has application to verifying single phase material and probing radiation damage, and has been shown to be more sensitive than the current evaluation method of X-ray diffraction. The defect fluorite structure has a poorly defined site due to random oxygen vacancies and a short fluorescence lifetime, while the pyrochlore structure has a well defined emission and long fluorescence lifetime. The Cm3+ fluorescence from the pyrochlore structure was found to have a greater bathochromic shift (red shift) and larger ground state splitting of the 8S7/2 than previously reported in any system.

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Cite this

TRLFS of Eu3+ and Cm3+ doped La2Zr 2O7: A comparison of defect fluorite to pyrochlore structures. / Holliday, Kiel S.; Finkeldei, Sarah; Neumeier, Stefan et al.
In: Journal of Nuclear Materials, Vol. 433, No. 1-3, 02.2013, p. 479-485.

Research output: Contribution to journalArticleResearchpeer review

Holliday, KS, Finkeldei, S, Neumeier, S, Walther, C, Bosbach, D & Stumpf, T 2013, 'TRLFS of Eu3+ and Cm3+ doped La2Zr 2O7: A comparison of defect fluorite to pyrochlore structures', Journal of Nuclear Materials, vol. 433, no. 1-3, pp. 479-485. https://doi.org/10.1016/j.jnucmat.2012.10.028
Holliday, K. S., Finkeldei, S., Neumeier, S., Walther, C., Bosbach, D., & Stumpf, T. (2013). TRLFS of Eu3+ and Cm3+ doped La2Zr 2O7: A comparison of defect fluorite to pyrochlore structures. Journal of Nuclear Materials, 433(1-3), 479-485. https://doi.org/10.1016/j.jnucmat.2012.10.028
Holliday KS, Finkeldei S, Neumeier S, Walther C, Bosbach D, Stumpf T. TRLFS of Eu3+ and Cm3+ doped La2Zr 2O7: A comparison of defect fluorite to pyrochlore structures. Journal of Nuclear Materials. 2013 Feb;433(1-3):479-485. doi: 10.1016/j.jnucmat.2012.10.028
Holliday, Kiel S. ; Finkeldei, Sarah ; Neumeier, Stefan et al. / TRLFS of Eu3+ and Cm3+ doped La2Zr 2O7 : A comparison of defect fluorite to pyrochlore structures. In: Journal of Nuclear Materials. 2013 ; Vol. 433, No. 1-3. pp. 479-485.
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T2 - A comparison of defect fluorite to pyrochlore structures

AU - Holliday, Kiel S.

AU - Finkeldei, Sarah

AU - Neumeier, Stefan

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AU - Bosbach, Dirk

AU - Stumpf, Thorsten

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