| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1502202 | Scripta Materialia | 2006 | 4 Pages |
Abstract
CaCu3Ti4O12/Ag composites with different Ag weight fractions were prepared by sintering thoroughly mixed CaCu3Ti4O12 and Ag2O powders at 1050 °C in air. The samples were found to consist of Ag-deficient insulating surface layers and Ag-rich more conductive inner parts. Dielectric measurements reveal that, apart from the distinct dielectric features for pure CaCu3Ti4O12, another dielectric relaxation appears near room temperature. This relaxation has been interpreted based on the Maxwell–Wagner model due to discontinuity of the charge concentration across the interface between the surface and inner layers.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
C.C. Wang, Y.J. Yan, L.W. Zhang, M.Y. Cui, G.L. Xie, B.S. Cao,