The Dielectric Spectroscopy Laboratory
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By means of this single spectrometer the dielectric response of the material
is investigated over extremelly broad frequency and temperature ranges with
the best accuracy.
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INSTRUMENT CHARACTERISTICS
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Impedance Analyzer: High-resolution
dielectric/impedance analyzer ALPHA-S Novocontrol
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Frequency range: 1e-3 - 1e7 Hz
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Sensitivity better than tan(delta)
~1e-5
Temperature Control: Nitrogen-jet
stream Quatro Cryosystem Novocontrol
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Temperature range: 100 - 600
K
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Temperature stability better
than ± 0.01 K
Samples: Solids (typically a film)
and Liquids
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A parallel plate capacitor of about 30 mm diameter and 0.1
mm thickness is formed with the sample by using two gold-plated electrodes
(see below) in order to have
a capacity in the range of 100 pF (optimum). The so formed capacitor is located
in the alpha active cell.
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