Phase diagram and orientational order in a biaxial lattice model: A Monte Carlo study
Physical review letters, 1995•APS
We have determined the phase diagram for a lattice system of biaxial particles interacting
with a second rank anisotropic potential using Monte Carlo simulations for a number of
values of the molecular biaxiality. We find increasing differences from mean field theory as
the biaxiality increases. We have also calculated for the first time the full set of second rank
biaxial and uniaxial order parameters and their temperature dependence, and on this basis
we comment on the difficulties of measuring phase biaxiality by NMR.
with a second rank anisotropic potential using Monte Carlo simulations for a number of
values of the molecular biaxiality. We find increasing differences from mean field theory as
the biaxiality increases. We have also calculated for the first time the full set of second rank
biaxial and uniaxial order parameters and their temperature dependence, and on this basis
we comment on the difficulties of measuring phase biaxiality by NMR.
Abstract
We have determined the phase diagram for a lattice system of biaxial particles interacting with a second rank anisotropic potential using Monte Carlo simulations for a number of values of the molecular biaxiality. We find increasing differences from mean field theory as the biaxiality increases. We have also calculated for the first time the full set of second rank biaxial and uniaxial order parameters and their temperature dependence, and on this basis we comment on the difficulties of measuring phase biaxiality by NMR.
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