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Author (up) Sereni, J.G. doi  openurl
  Title The effect of the electronic and structural environment on the valence of cerium Type Journal Article
  Year 1982 Publication Journal of the Less Common Metals Abbreviated Journal J. Less Common Metals  
  Volume 86 Issue 2 Pages 287-298  
  Keywords  
  Abstract By means of a semiempirical analysis the electrostatic energy Eψ of a charge immersed in the screened Coulomb potential of the total charge distribution of the metal was selected as the most appropriate parameter for correlating different cerium environments. The choice was made by determining the smallest dispersion in plots of various physicochemical parameters versus the rate of depression α of the superconducting transition temperature Tc of thorium-based alloys containing cerium impurities. The magnetic moment of cerium, which depends on the environment, was found to have the greatest effect on the depression of Tc. Eψ was found to be proportional to .

The analysis was extended to some ABj compounds (A ≡ elements of groups II–V including cerium and thorium; Bj ≡ N, Sn3, Tl3, Rh3, Co2, Ir2, B6 and Be13). An empirical relationship between Eψ and the volume contraction due to the formation of the compound was found. The cerium valence for any CeBj compound is deduced from the Eψ(Ce) value compatible with the curve of versusEψ(A), taking into account the fact that the valence and atomic radius of cerium are related.
 
  Address  
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  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0022-5088 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:A1982PL63800015 Approved no  
  Call Number BT @ hernan @ Serial 133  
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