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dc.contributor.authorVIJ, JAGDISH KUMAR
dc.date.accessioned2009-05-19T17:44:31Z
dc.date.available2009-05-19T17:44:31Z
dc.date.issued1992
dc.date.submitted1992en
dc.identifier.citationCostello, P.G., Kalmykov, Yu.P., Vij, J.K. `High-frequency dielectric behavior of a ferroelectric liquid crystal near the smectic-C*-smectic-A phase transition? in Physical Review A, 46, 8, (1992), pp 4852 - 4858en
dc.identifier.otherY
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/30290
dc.descriptionPUBLISHEDen
dc.description.abstractThe temperature and frequency dependence of the complex dielectric susceptibility of a ferroelectric liquid crystal (FLC) near the smectic-C*-smectic-A phase transition has been calculated using the generalized Landau model. It is shown that, although the dielectric response of the Sm-C* phase consists generally of four modes (soft, Goldstone, and two high-frequency polarization modes), only three bands appear in the dielectric-loss spectrum of FLC's at the Sm-A-Sm-C* phase transition. The calculations based on the generalized Landau model show that the frequency split of the two high-frequency modes is too low to be detected as two separate relaxation processes. A special technique has to be used to split these modes. At the Sm-A-Sm-C* phase transition this process does not split or broaden. These results are in agreement with the recent experimental data. It is shown that in the light of these calculations a revision of the theory as proposed by Pleiner and Brand [Phys. Rev. A 43, 7064 (1991); Mol. Cryst. Liq. Cryst. Lett. 8, 11 (1991)] is rather unnecessary.en
dc.format.extent4852en
dc.format.extent4858en
dc.format.extent955550 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.relation.ispartofseriesPhysical Review Aen
dc.relation.ispartofseries46en
dc.relation.ispartofseries8en
dc.rightsYen
dc.subjectElectronic & Electrical Engineeringen
dc.titleHigh-frequency dielectric behavior of a ferroelectric liquid crystal near the smectic-C*-smectic-A phase transitionen
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/jvij
dc.identifier.rssinternalid24392


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