Dielectrics in Electric Fields

Raju, Gorur Govinda

doi:10.1201/9780203912270

Cited by 425 publications

(308 citation statements)

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“…20 is not dominant behaviour in bulk at high fields for polyethylene materials 20,25,26 . In accordance with Eq.…”

Section: Three-dimensional Poole-frenkel Effectmentioning

confidence: 99%

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An improved model to estimate trapping parameters in polymeric materials and its application on normal and aged low-density polyethylenes

Liu

Alghamdi

et al. 2015

Journal of Applied Physics

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Trapping parameters can be considered as one of the important attributes to describe polymeric materials. In the present paper, a more accurate charge dynamics model has been developed, which takes account of charge dynamics in both volts-on and off stage into simulation. By fitting with measured charge data with the highest R-square value, trapping parameters together with injection barrier of both normal and aged low-density polyethylene (LDPE) samples were estimated using the improved model. The results show that, after long-term ageing process, the injection barriers of both electrons and holes is lowered, overall trap depth is shallower and trap density becomes much greater. Additionally, the changes in parameters for electrons are more sensitive than those of holes after ageing.

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“…20 is not dominant behaviour in bulk at high fields for polyethylene materials 20,25,26 . In accordance with Eq.…”

Section: Three-dimensional Poole-frenkel Effectmentioning

confidence: 99%

“…Such a model will result in the relative permittivity value of LDPE much closer to the true one 25,26 .…”

Section: Three-dimensional Poole-frenkel Effectmentioning

confidence: 99%

An improved model to estimate trapping parameters in polymeric materials and its application on normal and aged low-density polyethylenes

Liu

Alghamdi

et al. 2015

Journal of Applied Physics

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“…The parameter α is the absorption coefficient and takes values between 0 and 1, the real part of dielectric function is extracted from (1) as (3) for polar dielectrics and it is Debye type [10],…”

Section: Resultsmentioning

confidence: 99%

Electrical Parameters of Different Concentrations of Methyl Red in Fullerene Doped Liquid Crystal

et al. 2012

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Dielectric anisotropy and relaxation time of a liquid crystal (LC) system, containing fullerene and methyl red (MR) dye, were studied via impedance spectroscopy technique under a bias voltage. Dye concentration is tried to be 0.1%, 0.5%, and 1% in host nematic liquid crystal coded E7. Dielectric permittivity and dielectric anisotropy values of the samples were investigated between the frequency ranges of 100-10 MHz. It is seen that dielectric anisotropy is strongly affected by doping ratio and this value decreases with increasing dye. Also, relaxation time τ and critical frequency f c values were calculated depending on voltage of different dye ratios.

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“…The presence of two peaks in the tanδ, points towards the presence of two sub-types of dielectric relaxation, (by considering frequency range) i. e., space charge relaxation (first broad peak) and dipolar relaxation (second broad peak), 37,38 in the sample under study.…”

Section: Methodsmentioning

confidence: 99%

Room temperature magnetodielectric studies on Mn-doped LaGaO₃

Mohan

Late

Saxena

et al. 2015

Mater. Res. Express

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Dielectrics in Electric Fields

Cited by 425 publications

References 0 publications

An improved model to estimate trapping parameters in polymeric materials and its application on normal and aged low-density polyethylenes

An improved model to estimate trapping parameters in polymeric materials and its application on normal and aged low-density polyethylenes

Electrical Parameters of Different Concentrations of Methyl Red in Fullerene Doped Liquid Crystal

Room temperature magnetodielectric studies on Mn-doped LaGaO₃

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Dielectrics in Electric Fields

Cited by 425 publications

References 0 publications

An improved model to estimate trapping parameters in polymeric materials and its application on normal and aged low-density polyethylenes

An improved model to estimate trapping parameters in polymeric materials and its application on normal and aged low-density polyethylenes

Electrical Parameters of Different Concentrations of Methyl Red in Fullerene Doped Liquid Crystal

Room temperature magnetodielectric studies on Mn-doped LaGaO3

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Room temperature magnetodielectric studies on Mn-doped LaGaO₃