Temperature dependence of the initial ageing of dielectric constant in a lead magnesium niobate based ceramic
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
| Original language | English |
|---|---|
| Pages (from-to) | 589-592 |
| Journal / Publication | Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers |
| Volume | 37 |
| Issue number | 2 |
| Publication status | Published - Feb 1998 |
Link(s)
Abstract
The initial dielectric ageing behaviors of a doped Pb[Mg1/3Nb2/3]O3-based ceramic were investigated over a wide temperature range. The dielectric constant and logarithmic ageing time were regressed in terms of a linear relationship and the temperature dependence of ageing rate at different frequencies was obtained. The strongest ageing at a particular measurement frequency is confirmed to take place at the temperature of maximum dielectric constant of the deaged ceramic at that frequency. When the ageing temperature differs from this temperature, the ageing rate decreases. The curve of ageing rate against tempeature, which is found to be symmetrical in shape, is fitted by a Gaussian equation. Microstructural factors responsible for the phenomenon are analysed.
Research Area(s)
- Ageing, Dielectric property, Ferroelectric, Lead magnesium niobate, Perovskite, Relaxor
Citation Format(s)
Temperature dependence of the initial ageing of dielectric constant in a lead magnesium niobate based ceramic. / Wang, Yu; Chan, Yan Cheong; Gui, Zhi Lun; Li, Long Tu.
In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 37, No. 2, 02.1998, p. 589-592.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
