Journal of Radioanalytical and Nuclear Chemistry

, Volume 313, Issue 3, pp 487–496 | Cite as

Study of variation in thermophysical properties of RE6UO12(s) along the lanthanide series

  • Manjulata Sahu
  • K. Krishnan
  • Buddhadev Kanrar
  • M. K. Saxena
  • Smruti Dash
Article
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Abstract

The variation in thermophysical properties along the lanthanide series for RE6UO12(s) was investigated. Structural characterization of Er6UO12(s) was carried out by Rietveld refinement method. The trend in heat capacity along the rare earth series for RE6UO12(s) and RE2O3(s) as function of ionic radius of RE3+ was found to be similar. Hence, the sole cause of excess heat capacity in rare earth uranates was concluded to be the rare earth ion. Linear relation was found between the thermal expansion coefficient of RE6UO12(s) (RE = La, Gd, Lu) and the ionic radii of rare earth ion.

Keywords

Rare earth elements High temperature X-ray diffraction (HT-XRD) Differential scanning calorimeter (DSC) Excess heat capacity 
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Notes

Acknowledgements

The authors are thankful to Dr. K.L. Ramakumar, Ex Director,Radiochemistry and Isotope Group and Dr. B. S. Tomar, Director, radiochemistry and Isotope Group and Head, Radioanalytical Chemistry Division for their constant encouragement during the progress of this work.

Supplementary material

10967_2017_5339_MOESM1_ESM.docx (1.6 mb)
Supplementary material 1 (DOCX 1642 kb)

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2017

Authors and Affiliations

  • Manjulata Sahu
    • 1
  • K. Krishnan
    • 2
  • Buddhadev Kanrar
    • 2
  • M. K. Saxena
    • 1
  • Smruti Dash
    • 2
  1. 1.Radioanalytical Chemistry DivisionBhabha Atomic Research CentreMumbaiIndia
  2. 2.Fuel Chemistry DivisionBhabha Atomic Research CentreMumbaiIndia

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