High field AC conduction mechanism in nonpolar polymers

2003 ◽  
Author(s):  
K. Tohyama ◽  
M. Nagao ◽  
M. Kosaki ◽  
S. Bamji ◽  
A. Bulinski
Keyword(s):  
High Field ◽  
Conduction Mechanism ◽  
Ac Conduction

AC CONDUCTION PHENOMENON OF Li2O–WO3–B2O3 GLASSES DOPED WITH V2O5

2013 ◽  
Vol 06 (03) ◽  
pp. 1350032 ◽  
Author(s):  
LINGANABOINA SRINIVASA RAO ◽  
NALLURI VEERAIAH ◽  
TUMU VENKATAPPA RAO
Keyword(s):  
High Temperatures ◽  
Ac Conductivity ◽  
Conduction Mechanism ◽  
Glass Composition ◽  
Melt Quenching ◽  
Frequency Exponent ◽  
Spreading Factor ◽  
Cbh Model ◽  
Tan Δ ◽  
Ac Conduction

The glass composition 40 Li 2 O –5 WO 3–(55−x) B 2 O 3: x V 2 O 5 for x = 0.2, 0.4, 0.6 and 0.8 is chosen for the present study. The glass samples were synthesized by conventional melt-quenching technique. The dielectric properties such as constant (ε′), loss (tan δ) and ac conductivity (σac) are carried out as a function of temperature (30–270°C) and frequency (102–105 Hz). The glass sample (at x = 0.6) exhibited highest ac conductivity (σac) and spreading factor (β) among all the samples. All glasses exhibited mixed conduction (both electronic and ionic) at high temperatures. The frequency exponent s denotes the ac conduction mechanism is associated with both QMT model (at low temperatures) and CBH model (at high temperatures).

AC Conduction Mechanism in (Cu)x/(CuTl)-1223 Nanoparticles–Superconductor Composites

2020 ◽  
Vol 199 (5-6) ◽  
pp. 1268-1298 ◽  
Author(s):  
Abrar A. Khan ◽  
M. Mumtaz ◽  
Liaqat Ali ◽  
Mubasher ◽  
Y. Slimani ◽  
...  
Keyword(s):  
Conduction Mechanism ◽  
Ac Conduction

High-field conduction mechanism changes in anodic WO3and Ta2O5films

1981 ◽  
Vol 51 (2) ◽  
pp. 165-171 ◽  
Author(s):  
FATEH MOHAMMAD NAZAR ◽  
MOHAMMAD TAHIR ATIQ
Keyword(s):  
High Field ◽  
Conduction Mechanism

AC Conduction Mechanism in Borate Glasses Containing Antimony and Arsenic Ions

1995 ◽  
Vol 34 (Part 1, No. 3) ◽  
pp. 1431-1435 ◽  
Author(s):  
A. Datta ◽  
A. K. Giri ◽  
D. Chakravorty
Keyword(s):  
Conduction Mechanism ◽  
Borate Glasses ◽  
Ac Conduction

scholarly journals Conduction mechanism in (ZnO/PVC) polymer nanocomposite

2021 ◽  
Vol 2070 (1) ◽  
pp. 012007
Author(s):  
A Joy Singh
Keyword(s):  
Electrical Conductivity ◽  
Electric Field ◽  
Space Charge ◽  
Applied Electric Field ◽  
High Field ◽  
Conduction Mechanism ◽  
Polymer Nanocomposite ◽  
Zno Nanoparticle ◽  
Pure Sample ◽  
Transition Field

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.

Effect of Carbon Black Surface Treatment on the AC Electrical Properties of PP-Based Composites

2013 ◽  
Vol 712-715 ◽  
pp. 182-189
Author(s):  
Nai Xiu Ding ◽  
Li Li Wang ◽  
Pei Yan Zuo ◽  
Yong Li ◽  
Guang Ye Liu
Keyword(s):  
Electrical Conductivity ◽  
Electrical Properties ◽  
Carbon Black ◽  
Conduction Mechanism ◽  
Conduction Model ◽  
Conductive Composites ◽  
Carbon Black Surface ◽  
Black Surface ◽  
Ac Electrical Properties ◽  
Ac Conduction

Carbon black was first activated by grafting and coupling respectively. Then the grafted carbon black, coupled carbon black, together with the unmodified carbon black was filled into polypropylene to prepare three kinds of composites respectively. The measurements of Fourier Transform Infrared Spectroscopy (FTIR) and alternating current (AC) electrical properties were performed on the composites. And the effect of CB activation on the AC electrical properties was analyzed. Seen from the result of FTIR spectra it can be found that different groups are bonded to the surface of carbon black after activation. For the corresponding conductive composites,it was found that the value of percolation threshold decreases and the electrical conductivity improves consequently after the carbon black activation. The influence of carbon black activation on the AC electrical properties of the composites and their variation with frequency was analyzed. The AC conduction mechanism was discussed and the conduction model was constructed based on the analysis.

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