The Random Barrier Model and the Resistance Anomalies in Ferroelectric Ceramics
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概要
- 論文の詳細を見る
The theory of the low-and high field conductivity of ferroelectric ceramics in theregion of the positive temperature coefficient of the resistivity (PTCR) is refor-mulated on the basis of the random barrier model. For the low-field conductivity themodel gives the temperature dependence of the conductivity essentially similar tothat which follows from the Heywang equivalent-barrier model. The fluctuation ofthe barrier heights plays an important role for high fields where the shape of the cur-rent-voltage characteristic appears to be quite different from that given by theequivalent-barrier model. The experimental data on the high-field conductivity of(BaCe)Ti0.-ceramics are in agreement with the predictions of the random barriermodel.
- 社団法人日本物理学会の論文
- 1985-12-15
著者
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Zvyagin I
Waseda Univ. Tokyo
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Zvyagin I.p.
Department Of Physics School Of Science And Engineering Waseda University
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KINASE Wataru
Department of Physics,School of Science and Engineering,Waseda University
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Kinase Wataru
Deparment Of Physics Wasea University
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