Title :
On the critical behavior of linear and nonlinear dielectric permittivity on approaching the critical consolute point
Author :
Drozd-Rzoska, Aleksandra ; Rzoska, Sylwester J. ; Malike, Piot ; Janik, Pawel ; Górny, Michal ; Ziolo, J.
Author_Institution :
Inst. of Phys., Silesian Univ., Katowice, Poland
fDate :
2/1/2002 12:00:00 AM
Abstract :
Results are presented of the dielectric permittivity ε and nonlinear dielectric effects (NDE) in binary mixtures on approaching the critical consolute point (CCP), focusing first on Piekara´s findings [Phys. Rev. Vol.42, pp. 445-447, 1932, and C. R. Acad. Sci. Paris Vol. 203, pp. 1058-1059, 1936]. The presented results cover changes in temperature and pressure. For NDE particular attention is given to complex liquid features of critical mixtures appearing in ε and NDE tests. The latter are presented for the stationary and dynamic (time-resolved NDE) behavior. New results for NDE in nitrobenzene, hexane mixture with the lowest measurement frequency ever applied and in benzonitrile-isooctane mixture for dielectric permittivity are also included. For the latter, the first test of the relation: dε/dT α (T - TC) -α is shown
Keywords :
critical mixtures; critical points; liquid mixtures; organic compounds; permittivity; benzonitrile-isooctane mixture; binary mixtures; complex liquid features; critical behavior; critical consolute point; critical mixtures; dynamic behavior; hexane mixture; linear dielectric permittivity; nitrobenzene; nonlinear dielectric effects; nonlinear dielectric permittivity; stationary behavior; Dielectric constant; Dielectric measurements; Electric variables measurement; Equations; Frequency measurement; Permittivity measurement; Physics; Proposals; Temperature; Testing;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
