Bi-Tunable Dielectric Constant of Antiferroelectric PZT Ceramics Under DC Electric Field

The dielectric properties of (Pb0.85Ba0.11La0.03)(Zr0.76Sn0.20Ti0.04) (PLZST–B11) composite ceramics have been investigated systematically. The characteristic of PLZST–B11 was that it demonstrated antiferroelectricity. The dielectric constant increased, then decreased sharply with increasing DC elec...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2012-05, Vol.95 (5), p.1483-1485
Main Authors: Wang, Jinfei, Yang, Tongqing, Wei, Kun, Li, Gang, Chen, Shengchen
Format: Article
Language:English
Subjects:
Antiferroelectricity
Ceramics
Deltas
Design engineering
Dielectric constant
Dielectric properties
Direct current
Electric fields
Ferroelectrics
Temperature
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Summary:The dielectric properties of (Pb0.85Ba0.11La0.03)(Zr0.76Sn0.20Ti0.04) (PLZST–B11) composite ceramics have been investigated systematically. The characteristic of PLZST–B11 was that it demonstrated antiferroelectricity. The dielectric constant increased, then decreased sharply with increasing DC electric field, and a low loss also was obtained under DC electric fields (≤40 kV/cm). The low loss (tan δ ~0.003) and the highest tunability (~65%) were obtained for the PLZST–B11 ceramics around 50°C, indicating that it is a promising candidate for bi‐tunable materials nearby room temperature. The dielectric properties of PLZST–B11 composites under a DC bias field can be useful for the design of devices and practical applications.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2012.05129.x