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Raman spectroscopic studies of gadolinium trichloride as a function of temperature

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Abstract

Laser Raman spectrometry is being used in our laboratory to identify the crystal structures of lanthanide and actinide compounds. The phonon Raman spectrum of an ionic, crystalline sample is characteristic of the particular crystal structure(s) exhibited by the sample. GdCl3 exhibits two crystal structures, UCl3-type hexagonal and PuBr3-type orthorhombic. In the literature it is proposed that the low-temperature form is the PuBr3-type orthorhombic. Results of experiments in our laboratory suggest that the low-temperature form is the UCl3-type hexagonal. Interconversion between these two forms can be accomplished with temperature. In the present work, laser Raman spectrometry was used to monitor crystal structure changes in GdCl3 as a function of temperature and to determine the temperature at which the orthorhombic-to-hexagonal phase transformation occurs.

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Authors and Affiliations

  1. Department of Chemistry, University of Tennessee, 37996-1600, Knoxville, Tennessee

    J. F. Daniel & W. R. Wilmarth

  2. Transuranium Research Laboratory (Chemistry Division), Oak Ridge National Laboratory, 37831-6375, Oak Ridge, Tennessee

    G. M. Begun

  3. Department of Chemistry, University of Tennessee, 37996-1600, Knoxville, Tennessee

    J. R. Peterson

  4. Transuranium Research Laboratory, Oak Ridge National Laboratory, 37831-6375, Oak Ridge, Tennessee

    J. R. Peterson

Authors
  1. J. F. Daniel
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  2. W. R. Wilmarth
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  3. G. M. Begun
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  4. J. R. Peterson
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Daniel, J.F., Wilmarth, W.R., Begun, G.M. et al. Raman spectroscopic studies of gadolinium trichloride as a function of temperature. Journal of Crystallographic and Spectroscopic Research 19, 39–49 (1989). https://doi.org/10.1007/BF01160842

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  • DOI: https://doi.org/10.1007/BF01160842

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