Conduction mechanism in (ZnO/PVC) polymer nanocomposite

Abstract The electrical conductivity of ZnO nanoparticle doped PVC polymer of different concentrations and thickness has been investigated as a function if applied electric field and temperature. The LnJ versus E1/2 plot for the pure sample shows transition field but for highly doped sample, the plot shows curvature for both low and high field, i.e., there is no transition field. This nonlinearity of the plot is due to space charge built up in the sample. The value of β is calculated from the slope of LnJ versus E1/2 plot and compared with the theoretical value. The result shows the Poole-Frenkel mechanism of conduction is operative.

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Growth of α-mercury iodide crystals and study of space charge relaxation in an applied electric field

Journal of Crystal Growth ◽

10.1016/0022-0248(83)90075-1 ◽

1983 ◽

Vol 65 (1-3) ◽

pp. 365-369 ◽

Cited By ~ 4

Author(s):

Marin Gospodinov ◽

Peter Sveshtarov

Keyword(s):

Electric Field ◽

Space Charge ◽

Applied Electric Field ◽

Mercury Iodide ◽

Charge Relaxation

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Space charge and the dependence of the flow stress of ceramics on an applied electric field

Scripta Materialia ◽

10.1016/s1359-6462(00)00589-3 ◽

2001 ◽

Vol 44 (2) ◽

pp. 311-316 ◽

Cited By ~ 14

Author(s):

Hans Conrad

Keyword(s):

Flow Stress ◽

Electric Field ◽

Space Charge ◽

Applied Electric Field

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Electrical conductivity of ZnIn2S4 modulated by a perpendicular applied electric field

phys stat sol (a) ◽

10.1002/pssa.2210660259 ◽

1981 ◽

Vol 66 (2) ◽

pp. K127-K130 ◽

Cited By ~ 7

Author(s):

A. Anagnostopoulos ◽

I. Spyridelis

Keyword(s):

Electrical Conductivity ◽

Electric Field ◽

Applied Electric Field

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INVESTIGATION OF LEAKAGE CURRENT BEHAVIOR OF Pt/Bi0.975La0.025Fe0.975Ni0.025O3/Pt CAPACITOR MEASURED AT DIFFERENT TEMPERATURES

Surface Review and Letters ◽

10.1142/s0218625x14500292 ◽

2014 ◽

Vol 21 (02) ◽

pp. 1450029 ◽

Cited By ~ 1

Author(s):

XIU HONG DAI ◽

HONG DONG ZHAO ◽

LEI ZHANG ◽

HUI JUAN ZHU ◽

XIAO HONG LI ◽

...

Keyword(s):

Electric Field ◽

Leakage Current ◽

Applied Electric Field ◽

Conduction Mechanism ◽

Ferroelectric Properties ◽

Sol Gel ◽

Ohmic Behavior ◽

Different Temperatures ◽

Limited Conduction ◽

Current Behavior

Polycrystalline Bi 0.975 La 0.025 Fe 0.975 Ni 0.025 O 3 (BLFNO) film is fabricated on Pt / Ti / SiO 2/ Si (111) substrate by sol–gel method. It is found that the well-crystallized BLFNO film is polycrystalline, and the Pt / BLFNO / Pt capacitor possesses good ferroelectric properties with remnant polarization of 74 μC/cm2 at electric field of 833 kV/cm. Moreover, it is also found that the leakage current density of the Pt / BLFNO / Pt capacitor increases with the increase of measurement temperature ranging from 100 to 300 K. The leakage density of the Pt / BLFNO / Pt capacitor satisfies space-charge-limited conduction (SCLC) at higher electric field and shows little dependence on voltage polarity and temperature, but shows polarity and temperature dependence at lower applied electric field. With temperature increasing from 100 to 300 K at lower applied electric field, the most likely conduction mechanism is from Ohmic behavior to SCLC for positive biases, but no clear dominant mechanism for negative biases is shown.

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Space Charge Fields in the Development of a Townsend Discharge in Nitrogen

Australian Journal of Physics ◽

10.1071/ph690447 ◽

1969 ◽

Vol 22 (4) ◽

pp. 447 ◽

Cited By ~ 1

Author(s):

AA Doran

Keyword(s):

Light Intensity ◽

Electric Field ◽

Space Charge ◽

Applied Electric Field ◽

Dominant Role ◽

Light Output ◽

Exact Relation ◽

Townsend Discharge ◽

Discharge Gap ◽

Infor Mation

As the CUlTent through a spark rises into the milliampere range, ionization due to fields produced by space charge plays an increasingly dominant role. Infor� mation on these fields can be obtained from analysis of the light intensity emitted at different points along the axis of the discharge. In an earlier publication (Doran 1968) photomultiplier records of the light output obtained at various times during the growth of a Townsend discharge in nitrogen (pd = 600 torr cm) were analysed by an approximate method. In the present paper a more exact relation between the light emitted and the variation in local electric field is derived, enabling the previous results to be re.analysed. This has provided a quantitative picture, spatially and temporally resolved, of the development of these fields, which are associated with luminous fronts observed to propagate back and forth across the discharge gap. The magnitude of the field variations is in general about 10-20% of the applied electric field.

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