MECHANISM OF ELECTRICAL CONDUCTIVITY IN SEMICONDUCTING BARIUM TITANATE CERAMICS. PART 1

CLASSICAL MODELS AND MEASURED VARISTOR EFFECTS.

Gerhard Mader, H. Meixner, Peter Kleinschmidt

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

This study seeks to remedy the lack of consensus concerning the mechanism of electrical conductivity in semiconducting barium titanate ceramics. In Part 1 the literature covering fundamental research on the conductivity mechanism of these ceramics is reviewed. The authors' own measurements of the voltage dependence of resistance (varistor effect) are then presented for various temperature regions. Although Heywang's classical depletion-layer model offers a good explanation of the temperature dependence, the voltage dependence calculated on this basis consistently yields values that exceed the measurements.

Original languageEnglish
Pages (from-to)76-82
Number of pages7
JournalSiemens Forschungs- und Entwicklungsberichte/Siemens Research and Development Reports
Volume16
Issue number2
Publication statusPublished - 1987

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Varistors
Barium titanate
Electric potential
Temperature
Electric Conductivity

ASJC Scopus subject areas

  • Engineering(all)

Cite this

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abstract = "This study seeks to remedy the lack of consensus concerning the mechanism of electrical conductivity in semiconducting barium titanate ceramics. In Part 1 the literature covering fundamental research on the conductivity mechanism of these ceramics is reviewed. The authors' own measurements of the voltage dependence of resistance (varistor effect) are then presented for various temperature regions. Although Heywang's classical depletion-layer model offers a good explanation of the temperature dependence, the voltage dependence calculated on this basis consistently yields values that exceed the measurements.",
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AU - Meixner, H.

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AB - This study seeks to remedy the lack of consensus concerning the mechanism of electrical conductivity in semiconducting barium titanate ceramics. In Part 1 the literature covering fundamental research on the conductivity mechanism of these ceramics is reviewed. The authors' own measurements of the voltage dependence of resistance (varistor effect) are then presented for various temperature regions. Although Heywang's classical depletion-layer model offers a good explanation of the temperature dependence, the voltage dependence calculated on this basis consistently yields values that exceed the measurements.

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