Structure of the liquid-crystal ferrielectric phases as determined by ellipsometry

P. M. Johnson, D. A. Olson, S. Pankratz, T. Nguyen, J. Goodby, M. Hird, C. C. Huang

Research output: Contribution to journalArticlepeer-review

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The unit cell structures of two ferrielectric liquid-crystal phases are determined from ellipsometric studies of freestanding films in a nondistorting rotatable electric field. A highly biaxial mode with out-of-plane distortions describes all of the data from two different compounds. Qualitative and quantitative features of the data rule out alternate models. We also present a detailed explanation for apparent inconsistencies between previous resonant x-ray and optical experiments.

Original languageEnglish (US)
Pages (from-to)4870-4873
Number of pages4
JournalPhysical review letters
Issue number21
StatePublished - Jan 1 2000


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