• Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Crystal growth; gel method; erbium oxalate; absorption spectra.

    • Abstract


      Spectroscopic properties of praseodymium ions-doped erbium oxalate ($Er_2(C_2O_4)_3 \cdot nH_2O$) crystals have been investigated. The crystals were grown by hydro silica gel method under suitable pH conditions and by single diffusion method. The well-grown crystals are bright and transparent. The dark green colour of these crystals changes with the variation of the concentrations of the dopant ions. The absorption spectra have been measured in the region 200–800 nm at room temperature. Judd–Ofelt intensity parameters for f–f transitions of the $Pr^{3+}$ ions have been determined as $\Omega_2 = 166.7$, $\Omega_4 = 1.103$ and $\Omega_6 = 2.898$. Analyses of the absorption spectra also show a possible energy transfer from the host material to the dopant.

    • Author Affiliations


      R Pragash1 N V Unnikrishnan1 C Sudarsanakumar1

      1. School of Pure and Applied Physics, Mahatma Gandhi University, Kottayam, 686 560, India
    • Dates

  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.