Lattice Parameter Behavior with Different Nd and O Concentrations in (U1-yNdy)O2±x Solid Solution

Lee, Seung Min; Knight, Travis W.; Voit, Stwart L.; Barabash, Rozaliya I.

doi:10.13182/NT14-136

Title: Lattice Parameter Behavior with Different Nd and O Concentrations in (U_1-yNd_y)O_2±x Solid Solution

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Abstract

The solid solution of (U1-yFPy)O-_2±x, has the same fluorite structure as UO_2±x lambda, and the lattice parameter is affected by dissolved fission product and oxygen concentrations. We investigated the relation between the lattice parameter and the concentrations of neodymium and oxygen in the fluorite structure of (U_1-yNd_y)O_2±x using X-ray diffraction. Moreover, the lattice parameter behavior in the (U_1-yNd_y)O_2±x, solid solution shows a linear change as a function of the oxygen-to-metal ratio and solubility of neodymium. The lattice parameter depends on the radii of ions forming the fluorite structure and also can be expressed by a particular rule (modified Vegard's law). Furthermore, the numerical analyses of the lattice parameters for the stoichiometric and nonstoichionietric solid solutions were conducted, and the lattice parameter model for the (U1-yNdy)O_2±x, solid solution was assessed. There is a very linear relationship between the lattice parameter and the Nd and O concentration for the stoichiometry and nonstoichiometry of the (U_1-yNd_y)O_2±x solid solution was verified.

Authors:

Lee, Seung Min ^[1]; Knight, Travis W. ^[1]; Voit, Stwart L. ^[2]; Barabash, Rozaliya I. ^[2]

Univ. of South Carolina, Columbia, SC (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: Tue Feb 02 00:00:00 EST 2016

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Nuclear Energy (NE), Fuel Cycle Technologies (NE-5)

OSTI Identifier:: 1342664

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Nuclear Technology

Additional Journal Information:: Journal Volume: 193; Journal Issue: 2; Journal ID: ISSN 0029-5450

Publisher:: American Nuclear Society (ANS)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Lattice parameter; solid solution; solubility; OXIDES; FUELS

Citation Formats


                    Lee, Seung Min, Knight, Travis W., Voit, Stwart L., and Barabash, Rozaliya I. Lattice Parameter Behavior with Different Nd and O Concentrations in (U1-yNdy)O2±x Solid Solution.  United States: N. p., 2016. 
Web.  doi:10.13182/NT14-136.

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                    Lee, Seung Min, Knight, Travis W., Voit, Stwart L., & Barabash, Rozaliya I. Lattice Parameter Behavior with Different Nd and O Concentrations in (U1-yNdy)O2±x Solid Solution.  United States.  https://doi.org/10.13182/NT14-136

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                    Lee, Seung Min, Knight, Travis W., Voit, Stwart L., and Barabash, Rozaliya I. Tue .  
"Lattice Parameter Behavior with Different Nd and O Concentrations in (U1-yNdy)O2±x Solid Solution".  United States.  https://doi.org/10.13182/NT14-136.  https://www.osti.gov/servlets/purl/1342664.

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@article{osti_1342664,

  title        = {Lattice Parameter Behavior with Different Nd and O Concentrations in (U1-yNdy)O2±x Solid Solution},

  author       = {Lee, Seung Min and Knight, Travis W. and Voit, Stwart L. and Barabash, Rozaliya I.},

  abstractNote = {The solid solution of (U1-yFPy)O-2±x, has the same fluorite structure as UO2±x lambda, and the lattice parameter is affected by dissolved fission product and oxygen concentrations. We investigated the relation between the lattice parameter and the concentrations of neodymium and oxygen in the fluorite structure of (U1-yNdy)O2±x using X-ray diffraction. Moreover, the lattice parameter behavior in the (U1-yNdy)O2±x, solid solution shows a linear change as a function of the oxygen-to-metal ratio and solubility of neodymium. The lattice parameter depends on the radii of ions forming the fluorite structure and also can be expressed by a particular rule (modified Vegard's law). Furthermore, the numerical analyses of the lattice parameters for the stoichiometric and nonstoichionietric solid solutions were conducted, and the lattice parameter model for the (U1-yNdy)O2±x, solid solution was assessed. There is a very linear relationship between the lattice parameter and the Nd and O concentration for the stoichiometry and nonstoichiometry of the (U1-yNdy)O2±x solid solution was verified.},

  doi          = {10.13182/NT14-136},

  journal      = {Nuclear Technology},

  number       = 2,

  volume       = 193,

  place        = {United States},

  year         = {Tue Feb 02 00:00:00 EST 2016},

  month        = {Tue Feb 02 00:00:00 EST 2016}

}

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Title: Lattice Parameter Behavior with Different Nd and O Concentrations in (U1-yNdy)O2±x Solid Solution

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Title: Lattice Parameter Behavior with Different Nd and O Concentrations in (U_1-yNd_y)O_2±x Solid Solution