space-charge polarization

space-charge polarization

[′spās ¦chärj ‚pō·lə·rə′zā·shən]
(electricity)
Polarization of a dielectric which occurs when charge carriers are present which can migrate an appreciable distance through the dielectric but which become trapped or cannot discharge at an electrode. Also known as interfacial polarization.
References in periodicals archive ?
In clay bearing rocks, the presence of a connate brine results in the so-called surface effects: electric double layer polarization (i.e., Stern layer polarization) and Maxwell-Wagner space-charge polarization. They occur due to the presence of polarizable bound water at the clay-water interface and weakly bounded ions on the surface of mineral particles, which can slowly move under the influence of an external field and contribute toboth the conduction and electric polarization [3].
The variation of dielectric constant with frequency may be explained on the basis of space-charge polarization phenomenon [48].
In the low-frequency region (f < [10.sup.2] Hz), the dielectric behavior was attributable to the space-charge polarization. Both frequency-varying [epsilon]' and [epsilon]", dominated by the ionic effect in this frequency region, are proportional to [f.sup.-3/2] and [f.sup.-1] respectively.

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