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Magnetic-Field-Induced Weak Order in Nematic Liquid Crystals Formed by Biaxial Molecules |
| ZHANG Zhi-Dong;ZHANG De-Xian;SUN Yu-Bao |
| Department of Physics, Hebei University of Technology, Tianjin 300130 |
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| Cite this article: |
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ZHANG Zhi-Dong, ZHANG De-Xian, SUN Yu-Bao 2000 Chin. Phys. Lett. 17 749-751 |
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Abstract Nematic liquid crystal system of interacting biaxial particles via dispersion forces is studied. The molecular orienting potential form in a magnetic field is given for the first time. Weakly ordered isotropic phase is treated in the two-particle cluster approximation. Taking account of the molecular biaxiality, it is found that the ratio of the lowest supercooling temperature T* to the nematic-isotropic phase transition temperature Tc approaches the observed value, and the validity of the mean field theory is clarified.
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| Keywords:
61.30.Gd
64.70.Md
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Published: 01 October 2000
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| PACS: |
61.30.Gd
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(Orientational order of liquid crystals; electric and magnetic field effects on order)
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64.70.Md
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