Affiliation:
1. Department of Materials Science and Engineering National Cheng Kung University Tainan Taiwan
2. Department of Resources Engineering National Cheng Kung University Tainan Taiwan
Abstract
AbstractThe calculation of space charge potential, the difference of the activation energy of grain boundary and grain, and the ratio of conductivity of grain boundary and grain at different temperatures of the polycrystalline ceramics have been reappraised in the present model, in which charge carriers hopping through bulk and grain boundary barriers with different mobility are taken into account. It is evidenced that the present model is valid and more precise than previous models, and thus, it is concluded that the assumption that the mobility of charge carriers hopping through bulk and grain boundary barrier is the same made by the previous studies is unsuitable.
Funder
Ministry of Science and Technology, Taiwan
Subject
Materials Chemistry,Ceramics and Composites
Cited by
1 articles.
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