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Applied Physics Letters / Volume 96 / Issue 9 / DIELECTRICS AND FERROELECTRICITY

Appl. Phys. Lett. 96, 092903 (2010); http://dx.doi.org/10.1063/1.3337101 (3 pages)

Polarization inversion in a ferroelectric liquid crystal studied by math nuclear magnetic resonance

J. K. Cha1, K. W. Lee1, Cheol Eui Lee1, and J.-I. Jin2

1Department of Physics and Institute for Nano Science, Korea University, Seoul 136-713, Republic of Korea
2Department of Chemistry, Korea University, Seoul 136-713, Republic of Korea

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(Received 19 October 2009; accepted 5 February 2010; published online 2 March 2010)

A ferroelectric liquid crystal, S-2-methylbutyl 4-n-octanoyloxybiphenyl-4′-carboxylate, undergoing a characteristic polarization inversion, has been studied by math nuclear magnetic resonance (NMR). In addition to the discontinuities at the first-order isotropic and recrystallization phase transitions, the nuclear magnetic relaxation revealed a weak anomaly attributed to the soft mode at the Sm-A−Sm-C∗ liquid crystalline phase transition. Besides, the polarization inversion in the Sm-C∗ phase was manifested in the nuclear magnetic relaxation as well as in the NMR lineshape and in the temperature-dependent relative peak positions of the NMR line components, indicating that the polarization inversion is associated with a conformational transition.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

ferroelectric liquid crystals, organic compounds, phase transformations, proton magnetic resonance, recrystallisation

PACS

  • 64.70.mj

    Experimental studies of liquid crystal transitions

  • 76.60.Es

    Relaxation effects

  • 61.30.-v

    Liquid crystals

  • 77.84.Nh

    Liquids, emulsions, and suspensions; liquid crystals

  • 77.80.-e

    Ferroelectricity and antiferroelectricity

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3337101

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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