Evolution of the coherence of vibrational states in a gradual disorder-order phase transition

V. K. Dolganov, M. Gal, N. Kroo, L. Rosta, E. F. Sheka

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The nematic liquid crystal compound n-p-methoxy-benzylidene-p-butylaniline (MBBA) may be induced to form a solid glassy liquid crystal state by fast cooling. Under heating this amorphous structure can be gradually transformed into real crystal through intermediate, not completely crystallized phases. Laser Raman spectra of all phases were recorded in the 3-1800 cm-1 frequency range. Analysing changes occuring in the intermolecular part of the spectra (3-160 cm-1) from one phase to another it can be shown that the coherence of vibrational states evolves gradually according to the different stages of the disorder-order structural transformation.

Original languageEnglish
Pages (from-to)325-328
Number of pages4
JournalJournal of Molecular Structure
Volume114
Issue numberC
DOIs
Publication statusPublished - 1984

Fingerprint

Liquid Crystals
Order disorder transitions
Nematic liquid crystals
Phase Transition
vibrational states
Liquid crystals
Raman scattering
Phase transitions
liquid crystals
disorders
Cooling
Heating
Crystals
Lasers
frequency ranges
Raman spectra
cooling
heating
crystals
lasers

ASJC Scopus subject areas

  • Structural Biology
  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Materials Science (miscellaneous)
  • Atomic and Molecular Physics, and Optics

Cite this

Evolution of the coherence of vibrational states in a gradual disorder-order phase transition. / Dolganov, V. K.; Gal, M.; Kroo, N.; Rosta, L.; Sheka, E. F.

In: Journal of Molecular Structure, Vol. 114, No. C, 1984, p. 325-328.

Research output: Contribution to journalArticle

Dolganov, V. K. ; Gal, M. ; Kroo, N. ; Rosta, L. ; Sheka, E. F. / Evolution of the coherence of vibrational states in a gradual disorder-order phase transition. In: Journal of Molecular Structure. 1984 ; Vol. 114, No. C. pp. 325-328.
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