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|Title: ||Phase diagram exhibiting a smectic-A–smectic-C–smectic-F meeting point|
|Authors: ||Raja, V.N.|
Shankar Rao, D.S.
Krishna Prasad, S.
|Issue Date: ||15-Jul-1992 |
|Publisher: ||The American Physical Society|
|Citation: ||Physical Review A, 1992, Vol.46, R726-728|
|Abstract: ||We report an observation of a smectic-A–smectic-C–smectic-F (A-C-F) meeting point in a binary liquid-crystalline system. Detailed high-precision x-ray measurements enabled us to characterize the meeting point as a triple point, a point at which the three phases coexist. A direct consequence of this result is the existence of a tricritical point (TCP) on the A-C boundary. Contrary to the known results, the TCP appears despite a large temperature range for the A phase and the occurrence of a nematic phase at a higher temperature. Bearing in mind that F is a tilted hexatic phase, it is suggested that a possible reason for this behavior is the molecular-tilt field arising from the coupling between the tilt and the bond-orientational-order parameters.|
|ISSN: ||1094-1622 (online)|
|Alternative Location: ||http://link.aps.org/abstract/PRA/v46/pR726|
|Copyright: ||(1992) by the American Physical Society|
|Appears in Collections:||Research Papers (SCM)|
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