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 journalpeer-review

6 Scopus Citations
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Detail(s)

Original languageEnglish
Pages (from-to)589-592
Journal / PublicationJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume37
Issue number2
Publication statusPublished - Feb 1998

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 journalpeer-review