Orientational Order in Biaxial Liquid Crystals: The Smectic-VI and -HPhases
- 19 September 1977
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 39 (12), 763-766
- https://doi.org/10.1103/PhysRevLett.39.763
Abstract
The nuclear-quadrupole resonance (NQR) data of Seliger et al. on the smectic-VI and - phases of terephtal-bis-butylaniline are reanalyzed and compared to neutron results. For the smectic-VI phase, both methods lead to remarkably consistent conclusions, but do not differentiate between possible models. For the phase, the NQR results are consistent both with a model permitting weak orientational order around the long axis and with a model permitting uniform rotation around the long axis plus (anisotropic) fluctuations of this axis. The latter is more realistic since it agrees with the neutron results while the former does not.
Keywords
This publication has 7 references indexed in Scilit:
- Influence of intermolecular bonding on nuclear quadrupole interaction tensors in solid halogensThe Journal of Chemical Physics, 1977
- Orientational Order in Biaxial Liquid CrystalsPhysical Review Letters, 1977
- The problem of orientational order in tilted smectic phases : a high resolution neutron quasi-elastic scattering studyJournal de Physique, 1977
- NEUTRON QUASI-ELASTIC SCATTERING STUDY OF ROTATIONAL MOTIONS IN THE SMECTIC C, H AND VI PHASES OF TEREPHTAL-BIS-BUTYL-ANILINE (TBBA)Le Journal de Physique Colloques, 1976
- Nature of the Molecular Alignment in a Smectic-PhasePhysical Review Letters, 1975
- Simple molecular theory of the smectic,, andphasesPhysical Review A, 1974
- Uniaxial rotational diffusion in the smectic B phase of TBBA observed by quasi-elastic neutron scatteringJournal de Physique Lettres, 1974