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1996 (1)
1Author    S. Heinemann, H. Kresse, S. Saito, D. DemusRequires cookie*
 Title    Dielectric Studies of a Series of Liquid Crystalline Pyridine Derivates  
 Abstract    Measurements of the temperature and frequency dependence of dielectric constants have been performed for five homologues in the range 100 Hz -10 MHz. These substances exhibit a negative anisotropy of the dielectric constants and two relaxation regions (rotation of the molecules around the short resp. long axis) in the investigated frequency range. Even in the crystalline state dipolar reorientations are possible which have been interpreted as rotations of the alkoxy group. Changes of the static dielectric constants, relaxation frequencies and transition entropies are discussed as a measure of structural changes passing the several liquid crystalline phases. 
  Reference    Z. Naturforsch. 51a, 1019—1026 (1996); received May 3 1996 
  Published    1996 
  Keywords    Dielectric constants, Relaxation frequencies, Transition entropies, Tilted smectic phases 
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 TEI-XML for    default:Reihe_A/51/ZNA-1996-51a-1019.pdf 
 Identifier    ZNA-1996-51a-1019 
 Volume    51