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Synchrotron topography observations of a low temperature phase transition in an organic crystal

  • Michael Dudley
  • , Rosemarie Disalvo
  • , Jun Wu
  • , David Gordon-Smith
  • , William Jones
  • Stony Brook University
  • University of Warwick
  • University of Cambridge

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

In situ observations have been made, using synchrotron white beam X-ray topography in conjunction with a specially designed liquid nitrogen cold-finger cryostat, of single crystals of p-terphenyl as they undergo a phase transition at ≈130K. The transformation involves a monoclinic to triclinic structural change. Direct observation was made of two kinds of domains in the low temperature phase. The original microstructure of the crystal appeared unperturbed despite the considerable strain which develops during the transition. Comparison is drawn between the X-ray results presented here and those obtained previously using transmission electron microscopy.

Original languageEnglish
Pages (from-to)43-49
Number of pages7
JournalMolecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
Volume211
Issue number1
DOIs
StatePublished - Jan 1 1992

Keywords

  • cryostat
  • laue pattern
  • low temperature phase transition
  • p-terphenyl single crystals
  • synchrotron topography

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