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Optical Bragg reflections from a series of antiferroelectric hetrocyclic esters

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Publication details

JournalIEEE Transaction of Ultrasonics Ferroelectrics and Frequency Control
DatePublished - 2002
Number of pages15
Pages (from-to)467-481
Original languageEnglish


Optical Bragg reflections were used to probe phase transitions of four heterocyclic esters that exhibit various frustrated chiral smectic phases. These transitions showed considerable hysteresis and were detected by the dicscontinuities of the Bragg peaks. For one of these esters, applied fields of similar to 10(-6) V/m completely destroyed the Bragg reflections. Smaller fields resulted in peaks of reduced intensity and shifts to longer wavelengths.

    Research areas

  • ferroelectric, antiferroelectric, phase transitions, Bragg reflection, ALPHA-ASTERISK PHASE, LIQUID-CRYSTALS, HELICITY

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