Growth of trigonal gadolinium fluoride in a glass-ceramic for scintillation and optical applications

D. de Faoite, I. Tobin, A. Ulyanov, O. J. Roberts, B. Shortt, L. Hanlon, S. McBreen, K. T. Stanton

Research output: Contribution to journalArticlepeer-review

Abstract

This work determines the X-ray powder diffraction peak positions for trigonal GdF3 experimentally and using simulation. An oxyfluoride matrix glass-ceramic containing the inorganic compound GdF3 was synthesised by quench casting followed by controlled heat treatment. X-ray diffraction analysis was used to confirm the amorphous nature of the as-cast glass, and to identify the compounds crystallised in the glass-ceramic by heat treatment. A simulated powder diffraction pattern for trigonal GdF3 was calculated and used to confirm the identity of the compound crystallised in the glass-ceramic as being trigonal GdF3. Rietveld refinement of the structural model was performed using the measured diffraction pattern to accurately determine the unit cell parameters and asymmetric atomic coordinates. A simulated powder diffraction pattern was then calculated for trigonal GdF3 using the refined structural parameters.

Original languageEnglish
Pages (from-to)4739-4748
Number of pages10
JournalJournal of the European Ceramic Society
Volume38
Issue number14
DOIs
Publication statusPublished - Nov 2018
Externally publishedYes

Keywords

  • Crystallisation
  • Gadolinium fluoride
  • Glass-ceramic
  • Polymorphism
  • Scintillator

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