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- W2068763929 abstract "We continue here our previous Monte-Carlo calculations on a classical simple-cubic lattice consisting of point-dipoles with identical dipole moments. The system possesses an antiferroelectric ground state and, at higher temperatures, it undergoes a transition to an orientationally disordered phase, without developing any appreciable spontaneous polarization; comparison with molecular-field and spherical-model treatments of the transition has also been reported. Dipolar interactions are known not to be essential for nematic ordering, as can be seen from the existence of such a phase for p-quinquephenyl, but they are also known to play a significant role in some specific cases. The orientationally ordered phase of our system can be characterized by means of a common preferential direction of the dipoles, and a corresponding nonvanishing second-rank order parameter. Along the lines of the lattice-model approximation already used in simulation work on liquid crystals, the present potential model can be said to produce a nematic behaviour, although qualitatively different from other previously investigated nematogenic potential models. Continuing along the lines of our previous work, we further investigated the structural properties by calculating the singlet orientational distribution function at one temperature and with a larger Monte-Carlo sample, and found some qualitative differences from experiment and from other previously simulated short-ranged potential models." @default.
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- W2068763929 date "1986-09-15" @default.
- W2068763929 modified "2023-09-28" @default.
- W2068763929 title "Computer Simulation Study of the Singlet Orientational Distribution Function for a Model Antiferroelectric Nematic" @default.
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- W2068763929 doi "https://doi.org/10.1209/0295-5075/2/6/004" @default.
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