Percolation effects in the capacitive properties of metal-oxide varistors in the range of high voltage

C–V characteristics of ZnO-based ceramic structures used in manufacturing high-voltage and low-voltage varistors of different chemical compositions and manufacturing techniques have been investigated. A correlation between the intensity of electric field corresponding to transition of the C–V charac...

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Main Authors: A. S. Tonkoshkur, I. V. Gomilko, A. Yu Lyashkov
Format: Article
Language:English
Published: World Scientific Publishing 2014-04-01
Series:Journal of Advanced Dielectrics
Subjects:
Online Access:http://www.worldscientific.com/doi/pdf/10.1142/S2010135X14500131
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author A. S. Tonkoshkur
I. V. Gomilko
A. Yu Lyashkov
author_facet A. S. Tonkoshkur
I. V. Gomilko
A. Yu Lyashkov
author_sort A. S. Tonkoshkur
collection DOAJ
description C–V characteristics of ZnO-based ceramic structures used in manufacturing high-voltage and low-voltage varistors of different chemical compositions and manufacturing techniques have been investigated. A correlation between the intensity of electric field corresponding to transition of the C–V characteristics to the negative capacitances and average sizes of grains of a varistor structure has been established. Obtained data have been interpreted with the use of notions of the percolation theory of electric conductivity. The Shklovskii–De Gennes model has been used. It has been shown that on the highly nonlinear segment of C–V characteristics of a varistor structure, the size of an infinite cluster are limited to several intercrystallite potential barriers. This result is observed in all kinds of investigated varistor ceramics.
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spelling doaj.art-680f73cffac54a9f8d34984c16cf79912022-12-22T02:44:55ZengWorld Scientific PublishingJournal of Advanced Dielectrics2010-135X2010-13682014-04-01421450013-11450013-510.1142/S2010135X1450013110.1142/S2010135X14500131Percolation effects in the capacitive properties of metal-oxide varistors in the range of high voltageA. S. Tonkoshkur0I. V. Gomilko1A. Yu Lyashkov2Department of Physics, Electronics and Computer Systems, Dniepropetrovsk, National University, Gagarin av. 72, Dniepropetrovsk, 49010, UkraineDepartment of Physics, Electronics and Computer Systems, Dniepropetrovsk, National University, Gagarin av. 72, Dniepropetrovsk, 49010, UkraineDepartment of Physics, Electronics and Computer Systems, Dniepropetrovsk, National University, Gagarin av. 72, Dniepropetrovsk, 49010, UkraineC–V characteristics of ZnO-based ceramic structures used in manufacturing high-voltage and low-voltage varistors of different chemical compositions and manufacturing techniques have been investigated. A correlation between the intensity of electric field corresponding to transition of the C–V characteristics to the negative capacitances and average sizes of grains of a varistor structure has been established. Obtained data have been interpreted with the use of notions of the percolation theory of electric conductivity. The Shklovskii–De Gennes model has been used. It has been shown that on the highly nonlinear segment of C–V characteristics of a varistor structure, the size of an infinite cluster are limited to several intercrystallite potential barriers. This result is observed in all kinds of investigated varistor ceramics.http://www.worldscientific.com/doi/pdf/10.1142/S2010135X14500131VaristorceramicsC–V characteristicscapacitancepercolation
spellingShingle A. S. Tonkoshkur
I. V. Gomilko
A. Yu Lyashkov
Percolation effects in the capacitive properties of metal-oxide varistors in the range of high voltage
Journal of Advanced Dielectrics
Varistor
ceramics
C–V characteristics
capacitance
percolation
title Percolation effects in the capacitive properties of metal-oxide varistors in the range of high voltage
title_full Percolation effects in the capacitive properties of metal-oxide varistors in the range of high voltage
title_fullStr Percolation effects in the capacitive properties of metal-oxide varistors in the range of high voltage
title_full_unstemmed Percolation effects in the capacitive properties of metal-oxide varistors in the range of high voltage
title_short Percolation effects in the capacitive properties of metal-oxide varistors in the range of high voltage
title_sort percolation effects in the capacitive properties of metal oxide varistors in the range of high voltage
topic Varistor
ceramics
C–V characteristics
capacitance
percolation
url http://www.worldscientific.com/doi/pdf/10.1142/S2010135X14500131
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AT ivgomilko percolationeffectsinthecapacitivepropertiesofmetaloxidevaristorsintherangeofhighvoltage
AT ayulyashkov percolationeffectsinthecapacitivepropertiesofmetaloxidevaristorsintherangeofhighvoltage