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- W2004185720 abstract "The dielectric constant and the dielectric loss of the 5-n-hexyl-2-[4-n-hexyloxyphenyl]-pyrimidine and the 5-n-hexyl-2-[4-n-nonyloxyphenyl]-pyrimidine were measured in the nematic and the isotropic region in a frequency range from 0.1 to 10 MHz. The dielectric anisotropy of both substances is found to be positive at frequencies below and negative at frequencies above the relaxation region. The temperature dependence of the isotropy frequency (Δϵ′ 0) and the activation energies for the alignment of the dipoles in the electric field are calculated from the temperature dependence of the relaxation times. Es wurden die Dielektrizitätskonstante und der dielektrische Verlust vom 5-n-Hexyl-2-[4-n-hexyloxyphenyl]-pyrimidin und vom 5-n-Hexyl-2-[4-n-nonyloxyphenyl]-pyrimidin im nematischen und isotropen Gebiet im Frequenzbereich von 0,1 bis 10 MHz gemessen. Die dielektrische Anisotropie beider Substanzen ist positiv bei Frequenzen unterhalb und negativ bei Frequenzen oberhalb des Relaxationsgebietes. Die Temperaturabhängigkeit der Isotropiefrequenz (Δϵ′ = 0) und die Aktivierungsenergien für die Ausrichtung der Dipole im elektrischen Feld wurden aus der Temperaturabhängigkeit der Relaxationszeiten berechnet." @default.
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- W2004185720 date "1975-11-16" @default.
- W2004185720 modified "2023-10-16" @default.
- W2004185720 title "The dielectric behaviour of the nematic 5-n-hexyl-2-[4-n-alkyloxyphenyl]-pyrimidines" @default.
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- W2004185720 doi "https://doi.org/10.1002/pssa.2210320137" @default.
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