Please use this identifier to cite or link to this item:
http://hdl.handle.net/2289/751| Title: | Magnetic and electric birefringence in the isotropic phase of nematic liquid crystals |
| Authors: | Madhusudana, N.V. Chandrasekhar, S. |
| Keywords: | Magnetic birefringence Electric birefringence p-azoxyanisol Liquid crystals |
| Issue Date: | 1973 |
| Publisher: | Indian Academy of Sciences, Bangalore, India. |
| Citation: | Pramana, 1973, Vol. 1, p12 -20. |
| Abstract: | A theory is developed of the anomalous magnetic and electric birefringence in the isotropic phase of nematic liquid crystals taking into account orientational orrelations between neighbouridg molecules. Use is made of a modification of Bethe's method due to Krieger and James, and the properties of the system are derived in terms of a single parameter, viz., the two-partide interaction constant. The expressions for the magnetic and electric birefringence are similar in form to those given by the phenomeno- logical model of de Gennes. Theoretical curves for p-azoxyanisole reproduce the trends in the observed data. A calculation of the nematic-isotropic transition point confirms that this treatment is an improvement over the mean field approximation in describing pre-transition phenomena in the isotropic phase. |
| URI: | http://hdl.handle.net/2289/751 |
| ISSN: | 0304-4289 |
| Copyright: | Indian Academy of Sciences, Bangalore, India. |
| Appears in Collections: | Research Papers (SCM) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 1973 Pramana V1 p12.pdf | 9p. | 371.12 kB | Adobe PDF | View/Open |
Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.