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- Title
Effects of Calcining Temperature on Structure and Dielectric and Ferroelectric Properties of Sol-Gel Synthesized Ba0.85Ca0.15Zr0.1Ti0.9O3 Ceramics.
- Authors
Wang, X. W.; Zhang, B. H.; Feng, G.; Sun, L. Y.; Shi, Y. C.; Hu, Y. C.; Shang, J.; Shang, S. Y.; Yin, S. Q.; Wang, X. E.
- Abstract
Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) powders were prepared by sol-gel process followed by calcining at different temperatures varying from 600°C to 950°C, and the BCZT ceramics were then prepared using the as-synthesized powders. The effect of calcining temperature on structure, dielectric properties and ferroelectric properties of BCZT ceramics were studied. Impurity was observed in powders calcined at 600°C, and single-phase perovskite structure was obtained when calcining temperature increased to 650°C, which was significantly lower than that of the solid-state reaction. The high-density ceramics with homogenous microstructure were obtained by sintering at 1300°C for 2 h. The dielectric constants as a function of measuring temperature exhibited a diffuse phase transition peak. With the increase of calcining temperature, the slimmer P–E loops were obtained, and the BCZT ceramic calcined at 950°C exhibits a relatively high dielectric constant (εr = 2013) and low dielectric loss (tan δ = 0.020) at 1 kHz and room temperature.
- Subjects
DIELECTRIC properties; SOL-gel processes; TEMPERATURE effect; PERMITTIVITY; DIELECTRIC function; DIELECTRIC loss; LEAD-free ceramics; RELAXOR ferroelectrics
- Publication
Journal of Electronic Materials, 2020, Vol 49, Issue 1, p880
- ISSN
0361-5235
- Publication type
Article
- DOI
10.1007/s11664-019-07769-4