Charge factor, symmetry and electrostatics in europium compoundsM. A. Couto dos Santos
DFI/UFS - 49100-000 São Cristóvão, SE, Brazil
received 13 July 2009; accepted in final form 10 September 2009; published September 2009
published online 9 October 2009
Symmetry and electrostatic equilibrium in europium compounds are revisited with the aim of improving the role of obtaining the charge factors (gj), of the nearest neighbours (NN) of the lanthanide site, j running over the NN, now using the gj vs. Rj (the NN position) linear behaviour. An inferior limit of the gj position is predicted. Further, an indication that the and crystal field parameters may not exactly depend on gj or Rj in the same way as the parameter is, at least, made.
71.70.Ch - Crystal and ligand fields.
78.20.Bh - Theory, models, and numerical simulation.
78.55.Hx - Other solid inorganic materials.
© EPLA 2009