NDLI: Analysis of the dielectric characteristics for polycrystalline Ba$_{0.65}$Sr$_{0.35}$TiO$_{3}$ (II) – d.c. field dependence with a modified bias equation

Content Provider	Springer Nature Link
Author	Liou, Jih Wei Chiou, Bi Shiou
Copyright Year	2000
Abstract	The effect of direct-current (d.c.) biasing on the dielectric properties of Ba$_{0.65}$Sr$_{0.35}$TiO$_{3}$ (BST) with various grain sizes (0.87 μm to 5.43 μm) have been studied in the paraelectric state. The leakage current of BST samples is proportional to the biasing field. Specimens with larger grains exhibit higher leakage current under biasing. The bias equation used in the literature to predict the d.c. field dependence of permittivity is modified by introducing a bias exponent parameter β. This modified bias equation gives a better fit to the experimental results both in this study and in the literature. Similar trends of α (representing the distribution of relaxation times), β, and the variance of lattice distortion with grain sizes suggests that β is a material parameter. It is concluded that the temperature dependence, the frequency response and d.c. field effect for the dielectric characteristics of Ba$_{0.65}$Sr$_{0.35}$TiO$_{3}$ are all suppressed by the transition broadening.
Starting Page	645
Ending Page	651
Page Count	7
File Format	PDF
ISSN	09574522
Journal	Journal of Materials Science: Materials in Electronics
Volume Number	11
Issue Number	8
e-ISSN	1573482X
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2000-01-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical and Electronic Materials Characterization and Evaluation Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering

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