Title :
A conduction model for BaPbO3-based thick film resistors
Author :
Hsieh, Yu-Hung ; Fu, Shen-Li
Author_Institution :
Dept. of Electr. Eng., Nan-Tai Coll., Tainan Country, Taiwan
fDate :
6/1/1994 12:00:00 AM
Abstract :
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
Keywords :
barium compounds; electrical conductivity of solids; modelling; thick film resistors; BaPbO3; BaPbO3 powders; alkali glass frits; conduction model; contact conditions; contact conductance; distribution function; effective-medium theory; field dependence; microstructure observations; resistivity; temperature dependence; thick film resistors; trinary conductive channels; Conductivity; Distribution functions; Fabrication; Glass; Mechanical factors; Microstructure; Resistors; Scanning electron microscopy; Temperature dependence; Thick films;
Journal_Title :
Components, Packaging, and Manufacturing Technology, Part A, IEEE Transactions on
