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Ferroelectric mesophase with randomized interlayer structure.
Pociecha, Damian; Cepic, Mojca; Gorecka, Ewa; Mieczkowski, Jozef.
Afiliação
  • Pociecha D; Chemistry Department, Warsaw University, Zwirki i Wigury 101, 02-089 Warsaw, Poland. pociecha@chem.uw.edu.pl
Phys Rev Lett ; 91(18): 185501, 2003 Oct 31.
Article em En | MEDLINE | ID: mdl-14611288
We present the experimental and theoretical evidence that a new Sm X phase made of asymmetric bent-shaped molecules has a layered, nontilted, optically uniaxial and polarly ordered structure with random direction of the layer polarization. The randomness results from the sign degeneracy of the difference in polarization directions in neighboring layers, although the magnitude of the phase difference is constant. Lifting the degeneracy by external fields two additional structures of the Sm X phase are possible.
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Base de dados: MEDLINE Tipo de estudo: Clinical_trials Idioma: En Revista: Phys Rev Lett Ano de publicação: 2003 Tipo de documento: Article País de afiliação: Polônia
Buscar no Google
Base de dados: MEDLINE Tipo de estudo: Clinical_trials Idioma: En Revista: Phys Rev Lett Ano de publicação: 2003 Tipo de documento: Article País de afiliação: Polônia