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Selected Works

Gregory A. DiLisi

1991

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Full-Text Articles in Physics

Anomaly In The Dynamic Behavior Of The Electroclinic Effect Below The Nematic—Smectic-A Phase Transition, Gregory A. Dilisi, Zili Li, Robert B. Akins, Charles Rosenblatt, Rolfe G. Petscheck Dec 1990

Anomaly In The Dynamic Behavior Of The Electroclinic Effect Below The Nematic—Smectic-A Phase Transition, Gregory A. Dilisi, Zili Li, Robert B. Akins, Charles Rosenblatt, Rolfe G. Petscheck

Gregory A. DiLisi

The electroclinic effect and dielectric response have been investigated in the British Drug House material SCE12 over its entire 15-K smectic-A range. Near the smectic-A —srnectic-C -phase transition both the electroclinic coefficient and dynamic response behave normally, the former diverging and the latter exhibiting a critical slowing down on approaching T + from above. Similar behav- A-C ior is seen in the dielectric response. Approximately 10 to 12 K above T ~, however, it was found A-C that the electroclinic relaxation time levels off and even begins to increase again on approaching the nematic —smectic-A transition from below. The magnitude of the ...