High-pressure low-temperature phase transition in a dopedpara-terphenyl crystal: A spectral-hole-burning study
- 1 January 1998
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 57 (1), 14-17
- https://doi.org/10.1103/physrevb.57.14
Abstract
The homogeneous width of zero-phonon lines in a chlorin-doped para-terphenyl crystal is determined by spectral hole burning at under various hydrostatic pressures up to 7 kbar. A drastic broadening of spectral holes with pressure occurs on approaching the order-disorder (triclinic-to-monoclinic) phase transition which takes place under at The thermal broadening of spectral holes at fixed pressures is an activated process with the activation energy depending on pressure and having a deep minimum at i.e., in the phase-transition region.
Keywords
This publication has 27 references indexed in Scilit:
- Pressure induced phase transitions in pentacene doped para-terphenyl probed by changes in the impurity absorption spectrumThe Journal of Chemical Physics, 1993
- High pressure effects on low temperature relaxation in solidsJournal of Luminescence, 1992
- Hydrostatic pressure effects on spectral hole burning in a Shpol’skii systemJournal of the Optical Society of America B, 1992
- Spectral hole burning at high hydrostatic pressureChemical Physics Letters, 1991
- Optical linewidths and dephasing of organic amorphous and semi-crystalline solids studied by hole burningJournal of Luminescence, 1987
- Hole-burning study of zero-phonon linewidths in organic glassesJournal of Luminescence, 1987
- Structural phase transition in polyphenyls. IV. Double-well potential in the disordered phase of p-terphenyl from neutron (200 K) and X-ray (room-temperature) diffraction dataActa Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1977
- Transition structurale dans les polyphényles. I. Structure cristalline de la phase basse température du p-terphényle à 113 KActa Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1976
- Stable ‘gap’ in absorption spectra of solid solutions of organic molecules by laser irradiationOptics Communications, 1974
- Observation of a Photon EchoPhysical Review Letters, 1964