Physical properties of two systems with induced antiferroelectric phase |
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| Authors: | Marzena Tykarska Roman D?browski Jan Przedmojski Wiktor Piecek Katarzyna Skrzypek Bertrand Donnio |
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| Affiliation: | 1. Institute of Chemistry , Military University of Technology , 00‐908 Warsaw, Poland mtykarska@wat.edu.pl;3. Institute of Chemistry , Military University of Technology , 00‐908 Warsaw, Poland;4. Faculty of Physics , Warsaw University of Technology , 00‐662 Warsaw, Poland;5. Institute of Physics , Military University of Technology , 00‐908 Warsaw, Poland;6. IPCMS ‐ GMO 23 , F‐67034 Strasbourg CEDEX 2 , France |
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| Abstract: | Two ferroelectric three‐ring chiral esters, one with a partially fluorinated alkyl chain and another with a cyano terminal group, were mixed with a structurally similar compound having an alkyl terminal chain. In their mixtures an antiferroelectric phase was induced. The phase behaviour, spontaneous polarisation, tilt angle, smectic layer spacing and helical pitch of both systems were determined. The mechanism of the induction of an antiferroelectric phase is different in both cases, with highly tilted phases in former system and less tilted phases in the latter. |
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| Keywords: | antiferroelectric phase phase induction physical properties |
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