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@ARTICLE{Dey:452032,
      author       = {Dey, Kartick Ch. and Mandal, Pradip Kumar and Kula,
                      Przemysław},
      title        = {{E}ffect of fluorinated achiral chain length on structural,
                      dielectric and electro-optic properties of two terphenyl
                      based antiferroelectric liquid crystals},
      journal      = {Journal of molecular liquids},
      volume       = {298},
      issn         = {0167-7322},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {PUBDB-2020-04473, I-20170021},
      pages        = {112056},
      year         = {2020},
      note         = {Waiting for fulltext},
      abstract     = {Two antiferroelectric liquid crystals of different
                      fluorinated chain length have been studied. Although both
                      exhibit antiferroelectric (SmC$_A$*), ferroelectric (SmC*)
                      and paraelectric (SmA*) phases, melting point decreases with
                      increasing achiral chain length but clearing point shows
                      opposite trend. Thermal ranges of SmC$_A$* and SmC* phases
                      exhibit odd-even effect like the dipole moments and
                      spontaneous polarization. Layer spacings, average
                      intermolecular distances and correlation lengths across the
                      smectic planes also increase with chain length. Temperature
                      dependence of layer spacings, x-ray tilt, optical tilt and
                      spontaneous polarization suggest tricritical nature of
                      SmC*–SmA* transition. Dielectric increments decrease with
                      increased achiral chain. Both soft mode and Goldstone mode
                      critical frequencies decrease with decreasing temperature in
                      the lower derivative but opposite behaviour is observed in
                      the higher derivative. Both the compounds show Curie–Weiss
                      behaviour in soft mode near SmC*–SmA* transition
                      temperature (T$_c$). Goldstone mode critical frequency is
                      much higher in the higher derivative. Both in-phase and
                      anti-phase antiferroelectric modes are observed in SmC$_A$*
                      phase in the higher derivative but in the lower derivative
                      only anti-phase antiferroelectric mode is observed. Optical
                      tilts suggest orthoconic nature of the SmC$_A$* phase of
                      both the compounds. Ferroelectric- antiferroelectric
                      transition temperature decreases with increasing ac field in
                      both compounds.},
      cin          = {DOOR ; HAS-User},
      ddc          = {540},
      cid          = {I:(DE-H253)HAS-User-20120731},
      pnm          = {6G3 - PETRA III (POF3-622) / FS-Proposal: I-20170021
                      (I-20170021) / INDIA-DESY - INDIA-DESY Collaboration
                      $(2020_Join2-INDIA-DESY)$},
      pid          = {G:(DE-HGF)POF3-6G3 / G:(DE-H253)I-20170021 /
                      $G:(DE-HGF)2020_Join2-INDIA-DESY$},
      experiment   = {EXP:(DE-H253)P-P07-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000512219300082},
      doi          = {10.1016/j.molliq.2019.112056},
      url          = {https://bib-pubdb1.desy.de/record/452032},
}