Molecular Dynamics of n-p-(Ethoxybenzylidene) P'-Propylaniline in Nematic and Solid Phases as Studied by Dielectric Relaxation Spectroscopy
A. Bąka, M. Massalska-Arodźb and S. Urbanc
a Chair of Physics, Technical University of Rzeszów, W. Pola 2, 35-959 Rzeszów, Poland
b Henryk Niewodniczański Institute of Nuclear Physics, Radzikowskiego 152, 31-342 Kraków, Poland
c Institute of Physics, Jagiellonian University, W. Reymonta 4, 30-059 Kraków, Poland
Received: August 20, 1999; revised version December 22, 1999
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The complex dielectric permittivity ε*(ν,T)=ε' (ν,T)-i ε''(ν,T) of n-p-(ethoxybenzylidene) p'-propylaniline has been measured in the frequency range from 1 Hz to 13 MHz and temperature range from 360 K to 180 K on heating and on cooling the sample. Dielectric relaxations have been found in nematic and solid phases. A detailed analysis of the observed processes has been performed and the parameters describing molecular dynamics have been evaluated. The comparison of results with those obtained for the other Schiff bases is discussed.
DOI: 10.12693/APhysPolA.97.323
PACS numbers: 64.70.Md, 77.22.Gm