Improved Breakdown Strength in (Ba0.6Sr0.4)0.85Bi0.1TiO3 Ceramics with Addition of CaZrO3 for Energy Storage Application
| Autor: | Junxiong Gao, Zhen-Lin Li, Fangyuan Chen, Wen-Zhong Lu, Xiao-Hong Wang |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science 02 engineering and technology Dielectric 021001 nanoscience & nanotechnology Thermal diffusivity Microstructure 01 natural sciences Lattice constant Electrical resistivity and conductivity Electric field visual_art 0103 physical sciences visual_art.visual_art_medium General Materials Science Dielectric loss Ceramic Composite material 0210 nano-technology |
| Zdroj: | Journal of Wuhan University of Technology-Mater. Sci. Ed.. 33:545-551 |
| ISSN: | 1993-0437 1000-2413 |
| DOI: | 10.1007/s11595-018-1858-0 |
| Popis: | (Ba0.6Sr0.4)0.85Bi0.1TiO3 ceramics doped with x wt%CaZrO3 (x= 0-10) were synthesized by solid-state reaction method. The effects of CaZrO3 amount on the dielectric properties and structure of (Ba0.6Sr0.4)0.85Bi0.1TiO3 ceramics were investigated. X-ray diffraction results indicated a pure cubic perovskite structure for all samples and that the lattice parameter increased till x=5 and then slightly decreased. A homogenous microstructure was observed with the addition of CaZrO3. Dielectric measurements revealed a relaxor-like characteristic for all samples and that the diffusivity γ reached the maximum value of 1.78 at x=5. With the addition of CaZrO3, the dielectric constant dependence on electric field was weakened, insulation resistivity enhanced and dielectric breakdown strength improved obviously and reached 19.9 kV/mm at x=7.5. In virtue of low dielectric loss (tan δ 1 500) and high breakdown strength (Eb >17.5 kV/mm), the CaZrO3 doped (Ba0.6Sr0.4)0.85Bi0.1TiO3 ceramic is a potential candidate material for high power electric applications. |
| Databáze: | OpenAIRE |
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