Variation in Plasmonic (Electronic) Spectral Parameters of Pr (III) and Nd (III) with Varied Concentration of Moderators

摘要

It is said that the -4f shells behave as core and are least perturbed by changes around metal ion surrounding. However, there are evidences that-4f shells partially involved in direct moderator interaction. A systematic investigation on the plasmonic (electronic) spectral studies of some Rare Earths[RE(III).Mod] where, RE(III)= Pr(III),Nd(III) and Mod(moderator) = Y(III),La(III),Gd(III) and Lu(III), increased moderator concentration from 0.01 mol dm~(-3) to 0.025 mol dm~(-3) keeping the metal ion concentration at 0.01mol dm~(-3) have been carried out. Variations in oscillator strengths (f), Judd-Ofelt parameters (T_λ), inter-electronic repulsion Racah parameters (δE~k), nephelauxetic ratio (β), radiative parameters (S_(ED),A_T,β_R,T_R). The values of oscillator strengths and Judd-Ofelt parameters have been discussed in the light of coordination number of RE(III) metal ions, denticity and basicity of the moderators. The [RE(III).Mod] bonding pattern has been studies in the light of the change in Racah parameters and nephelauxetic ratio.