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A conduction model for BaPbO3-based thick film resistors

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2 Author(s)
Yu-Hung Hsieh ; Dept. of Electr. Eng., Nan-Tai Coll., Tainan Country, Taiwan ; Shen-Li Fu

BaPbO3-based thick film resistors were fabricated using BaPbO3 powders and alkali glass frits. From microstructure observations, the conductive mechanisms are assumed to be related to the contact conditions between particles, and by means of EMT (effective-medium theory) approximation for some possible distributions, a more possible conductive model is proposed. This model is composed of trinary conductive channels, i.e., continuous, semi-continuous, and discontinuous, corresponding to a distribution function of the contact conductance, which is composed of trinary contact conditions, i.e., good contact, poor contact (both with same probability density) and no contact between BaPbO3 particles. This model can explain the blending curve, temperature dependence and field dependence of resistivity of the specimens

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Components, Packaging, and Manufacturing Technology, Part A, IEEE Transactions on  (Volume:17 ,  Issue: 2 )