The influence of structure evolution on dielectric performance in BaZr0.1Ti0.89Fe0.01O3 ceramics

BaZr 0.1 Ti 0.89 Fe 0.01 O 3 ceramics sintered at 1240–1340 °C were prepared by solid-state method. The sample underwent phase transition from rhombohedral to orthorhombic phase, which changed the internal stress. Increasing the sintering temperature promoted grain growth (from 0.44 to 1.87 μm). The...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2020-04, Vol.31 (7), p.5746-5751
Main Authors: Kang, Wenshuo, Li, Yuanliang, Zheng, Zhanshen, Yan, Shuhao, Zhao, Rujie
Format: Article
Language:English
Subjects:
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Diffusion coefficient
Grain growth
Materials Science
Optical and Electronic Materials
Orthorhombic phase
Permittivity
Phase transitions
Residual stress
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Summary:BaZr 0.1 Ti 0.89 Fe 0.01 O 3 ceramics sintered at 1240–1340 °C were prepared by solid-state method. The sample underwent phase transition from rhombohedral to orthorhombic phase, which changed the internal stress. Increasing the sintering temperature promoted grain growth (from 0.44 to 1.87 μm). The dielectric constant ( ε  = 4300) and diffusion coefficient ( γ  = 1.927) of the sample were improved significantly. The improvement mechanism of dielectric constant and dispersion phase transition was explained by the internal stress model and 90° domain structure in detail.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-020-03144-w