Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
751260 | Sensors and Actuators B: Chemical | 2010 | 6 Pages |
Abstract
CaCu3Ti4O12 (CCTO) is known as a dielectric material exhibiting a high and relatively temperature-independent dielectric constant over a wide temperature range from 100 to 400 K. Here, we report the huge responses of dielectric constant to relative humidity found in ceramic CCTO and Mg-doped CCTO. The dielectric constant at 97% relative humidity is about 5.8 times larger than that at 11% relative humidity for pure CCTO measured at 1 kHz. Mg doping enhances the sensitivity of dielectric constant to relative humidity. CCTO and Mg-doped CCTO are promising candidates for fabricating new humidity sensors.
Related Topics
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Authors
M. Li, X.L. Chen, D.F. Zhang, W.Y. Wang, W.J. Wang,