Significantly enhanced breakdown electric field in Zn-doped Y2/3Cu3Ti4O12 ceramics
| Autor: | Xing Wang, Zupei Yang, Pengfei Liang, Xiaolian Chao, Zhanhui Peng, Yichen Xiang, Hui Peng |
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| Rok vydání: | 2019 |
| Předmět: |
Work (thermodynamics)
Range (particle radiation) Materials science Mechanical Engineering Metals and Alloys Analytical chemistry 02 engineering and technology Dielectric Atmospheric temperature range 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Mechanics of Materials visual_art Electric field Materials Chemistry visual_art.visual_art_medium Grain boundary Ceramic 0210 nano-technology Perovskite (structure) |
| Zdroj: | Journal of Alloys and Compounds. 778:391-397 |
| ISSN: | 0925-8388 |
| Popis: | A′ site substitution in perovskite Y2/3Cu3-xZnxTi4O12 (x = 0.00, 0.03, 0.05, 0.07, 0.1) was designed and synthesized using solid state reaction method. Zn doping was responsible for the improved dielectric properties and nonlinear behaviors of the samples. All the samples exhibited giant dielectric constant above 7000 over a wide frequency range of 40 Hz–100 kHz. Besides, the temperature stability of the dielectric constant was controlled within −10.1%–11.9% in the temperature range from −55 °C to 125 °C at 10 kHz. Remarkably, the breakdown electric field for Y2/3Cu2.9Zn0.1Ti4O12 sample was significantly enhanced to ∼10.86 kV/cm, which could be attributed to the enhanced grain boundary resistance. Our work might shed light on future researches on A′ site substitution in ACTO based dielectrics. |
| Databáze: | OpenAIRE |
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