| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1616846 | Journal of Alloys and Compounds | 2011 | 5 Pages |
Abstract
⺠We study the dielectric behaviour and capacitance-voltage (C-V) curves under an applied DC bias field of 1 wt% Nb-doped CaCu3Ti4O12 ceramics. ⺠There are grain boundaries of different electrical nature. ⺠At low frequency the material exhibits a double Metal Oxide Semiconductor (MOS) capacitor-like behaviour. ⺠At higher frequency the C-V curve suffers an inversion showing a ferroelectric-like response. ⺠The giant dielectric constant is not intrinsic to the material but apparent and it is caused by conduction effects.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
P. Leret, M.A. de la Rubia, J.J. Romero, J. De Frutos, J.F. Fernández,