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 language | English |
|---|---|
| Pages (from-to) | 43-49 |
| Number of pages | 7 |
| Journal | Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals |
| Volume | 211 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 1 1992 |
Keywords
- cryostat
- laue pattern
- low temperature phase transition
- p-terphenyl single crystals
- synchrotron topography
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